diff --git a/bin/windows/erlang-petstore-server.bat b/bin/windows/erlang-petstore-server.bat
index dc28c8c0fae..dbae5bf9faf 100755
--- a/bin/windows/erlang-petstore-server.bat
+++ b/bin/windows/erlang-petstore-server.bat
@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
-set ags=generate -t modules\openapi-generator\src\main\resources\erlang-server -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g erlang-server -o samples\client\petstore\erlang-server
+set ags=generate -t modules\openapi-generator\src\main\resources\erlang-server -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g erlang-server -o samples\server\petstore\erlang-server
 
 java %JAVA_OPTS% -jar %executable% %ags%
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java
index 7bcfb843538..1b7500c831e 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java
@@ -278,4 +278,5 @@ public class CodegenConstants {
     public static final String ENABLE_POST_PROCESS_FILE = "enablePostProcessFile";
     public static final String ENABLE_POST_PROCESS_FILE_DESC = "Enable post-processing file using environment variables.";
 
+    public static final String OPEN_API_SPEC_NAME = "openAPISpecName";
 }
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java
index 3abb6e13436..1fc21142708 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java
@@ -40,6 +40,7 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
     protected String apiVersion = "1.0.0";
     protected String apiPath = "src";
     protected String packageName = "openapi";
+    protected String openApiSpecName = "openapi";
 
     public ErlangServerCodegen() {
         super();
@@ -47,13 +48,6 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
         // set the output folder here
         outputFolder = "generated-code/erlang-server";
 
-        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
-            setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
-        } else {
-            additionalProperties.put(CodegenConstants.PACKAGE_NAME, packageName);
-        }
-        ;
-
         /**
          * Models.  You can write model files using the modelTemplateFiles map.
          * if you want to create one template for file, you can do so here.
@@ -117,6 +111,27 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
         cliOptions.clear();
         cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "Erlang package name (convention: lowercase).")
                 .defaultValue(this.packageName));
+
+        cliOptions.add(new CliOption(CodegenConstants.OPEN_API_SPEC_NAME, "Openapi Spec Name.")
+                .defaultValue(this.openApiSpecName));
+    }
+
+    @Override
+    public void processOpts() {
+        super.processOpts();
+
+        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
+            setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
+        } else {
+            additionalProperties.put(CodegenConstants.PACKAGE_NAME, packageName);
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.OPEN_API_SPEC_NAME)) {
+            setOpenApiSpecName((String) additionalProperties.get(CodegenConstants.OPEN_API_SPEC_NAME));
+        } else {
+            additionalProperties.put(CodegenConstants.OPEN_API_SPEC_NAME, openApiSpecName);
+        }
+
         /**
          * Additional Properties.  These values can be passed to the templates and
          * are available in models, apis, and supporting files
@@ -135,7 +150,7 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
         supportingFiles.add(new SupportingFile("server.mustache", "", toSourceFilePath("server", "erl")));
         supportingFiles.add(new SupportingFile("utils.mustache", "", toSourceFilePath("utils", "erl")));
         supportingFiles.add(new SupportingFile("auth.mustache", "", toSourceFilePath("auth", "erl")));
-        supportingFiles.add(new SupportingFile("openapi.mustache", "", toPrivFilePath("openapi", "json")));
+        supportingFiles.add(new SupportingFile("openapi.mustache", "", toPrivFilePath(this.openApiSpecName, "json")));
         supportingFiles.add(new SupportingFile("default_logic_handler.mustache", "", toSourceFilePath("default_logic_handler", "erl")));
         supportingFiles.add(new SupportingFile("logic_handler.mustache", "", toSourceFilePath("logic_handler", "erl")));
         writeOptional(outputFolder, new SupportingFile("README.mustache", "", "README.md"));
@@ -254,6 +269,10 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
         this.packageName = packageName;
     }
 
+    public void setOpenApiSpecName(String openApiSpecName) {
+        this.openApiSpecName = openApiSpecName;
+    }
+
     protected String toHandlerName(String name) {
         return toModuleName(name) + "_handler";
     }
diff --git a/modules/openapi-generator/src/main/resources/erlang-server/router.mustache b/modules/openapi-generator/src/main/resources/erlang-server/router.mustache
index 740d85ccd0d..f2c3b66f9c4 100644
--- a/modules/openapi-generator/src/main/resources/erlang-server/router.mustache
+++ b/modules/openapi-generator/src/main/resources/erlang-server/router.mustache
@@ -69,6 +69,6 @@ prepare_validator() ->
 
 get_openapi_path() ->
     {ok, AppName} = application:get_application(?MODULE),
-    filename:join({{packageName}}_utils:priv_dir(AppName), "openapi.json").
+    filename:join({{packageName}}_utils:priv_dir(AppName), "{{{openAPISpecName}}}.json").
 
 
diff --git a/samples/server/petstore/erlang-server/.openapi-generator/VERSION b/samples/server/petstore/erlang-server/.openapi-generator/VERSION
index 096bf47efe3..a6527129083 100644
--- a/samples/server/petstore/erlang-server/.openapi-generator/VERSION
+++ b/samples/server/petstore/erlang-server/.openapi-generator/VERSION
@@ -1 +1 @@
-3.0.0-SNAPSHOT
\ No newline at end of file
+3.3.2-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/erlang-server/priv/openapi.json b/samples/server/petstore/erlang-server/priv/openapi.json
index 34eb757240d..82d674b5575 100644
--- a/samples/server/petstore/erlang-server/priv/openapi.json
+++ b/samples/server/petstore/erlang-server/priv/openapi.json
@@ -104,6 +104,7 @@
           "in" : "query",
           "description" : "Status values that need to be considered for filter",
           "required" : true,
+          "style" : "form",
           "explode" : false,
           "schema" : {
             "type" : "array",
@@ -157,6 +158,7 @@
           "in" : "query",
           "description" : "Tags to filter by",
           "required" : true,
+          "style" : "form",
           "explode" : false,
           "schema" : {
             "type" : "array",