diff --git a/modules/openapi-generator/src/main/resources/typescript-axios/baseApi.mustache b/modules/openapi-generator/src/main/resources/typescript-axios/baseApi.mustache
index 05722bdd3ca..21b32eac4e1 100644
--- a/modules/openapi-generator/src/main/resources/typescript-axios/baseApi.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-axios/baseApi.mustache
@@ -42,7 +42,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/echo_api/typescript-axios/build/base.ts b/samples/client/echo_api/typescript-axios/build/base.ts
index 82cbbb7451a..0b934f63480 100644
--- a/samples/client/echo_api/typescript-axios/build/base.ts
+++ b/samples/client/echo_api/typescript-axios/build/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/others/typescript-axios/with-separate-models-and-api-inheritance/base.ts b/samples/client/others/typescript-axios/with-separate-models-and-api-inheritance/base.ts
index 37ea6c1734b..d0ca3a31564 100644
--- a/samples/client/others/typescript-axios/with-separate-models-and-api-inheritance/base.ts
+++ b/samples/client/others/typescript-axios/with-separate-models-and-api-inheritance/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/composed-schemas/base.ts b/samples/client/petstore/typescript-axios/builds/composed-schemas/base.ts
index db5423d2ad4..00697e3ddbc 100644
--- a/samples/client/petstore/typescript-axios/builds/composed-schemas/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/composed-schemas/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/default/base.ts b/samples/client/petstore/typescript-axios/builds/default/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/default/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/default/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/es6-target/base.ts b/samples/client/petstore/typescript-axios/builds/es6-target/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/es6-target/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/es6-target/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/test-petstore/base.ts b/samples/client/petstore/typescript-axios/builds/test-petstore/base.ts
index d1948fba7bd..a249a937e0f 100644
--- a/samples/client/petstore/typescript-axios/builds/test-petstore/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/test-petstore/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-complex-headers/base.ts b/samples/client/petstore/typescript-axios/builds/with-complex-headers/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/with-complex-headers/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-complex-headers/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/base.ts b/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/base.ts
index d1948fba7bd..a249a937e0f 100644
--- a/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-interfaces/base.ts b/samples/client/petstore/typescript-axios/builds/with-interfaces/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/with-interfaces/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-interfaces/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-node-imports/base.ts b/samples/client/petstore/typescript-axios/builds/with-node-imports/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/with-node-imports/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-node-imports/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/base.ts b/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-npm-version/base.ts b/samples/client/petstore/typescript-axios/builds/with-npm-version/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/with-npm-version/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-npm-version/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/base.ts b/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/base.ts b/samples/client/petstore/typescript-axios/builds/with-string-enums/base.ts
index ebe025090b6..02192cb47b4 100644
--- a/samples/client/petstore/typescript-axios/builds/with-string-enums/base.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/base.ts
@@ -53,7 +53,7 @@ export class BaseAPI {
     constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
         if (configuration) {
             this.configuration = configuration;
-            this.basePath = configuration.basePath || this.basePath;
+            this.basePath = configuration.basePath ?? basePath;
         }
     }
 };