diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
index e22a4f8ea50..d3998a47bca 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
@@ -1756,10 +1756,10 @@ public class DefaultCodegen implements CodegenConfig {
                     m.interfaces.add(modelName);
                     addImport(m, modelName);
                     if (allDefinitions != null && refSchema != null) {
-                        if (allParents.contains(modelName) && supportsMultipleInheritance) {
+                        if (allParents.contains(ref) && supportsMultipleInheritance) {
                             // multiple inheritance
                             addProperties(allProperties, allRequired, refSchema);
-                        } else if (parentName != null && parentName.equals(modelName) && supportsInheritance) {
+                        } else if (parentName != null && parentName.equals(ref) && supportsInheritance) {
                             // single inheritance
                             addProperties(allProperties, allRequired, refSchema);
                         } else {
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java
index fcb8a9f916f..b8b3a717905 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java
@@ -18,6 +18,7 @@
 package org.openapitools.codegen;
 
 import com.google.common.collect.Sets;
+import io.swagger.parser.OpenAPIParser;
 import io.swagger.v3.oas.models.Components;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
@@ -28,10 +29,15 @@ import io.swagger.v3.oas.models.parameters.QueryParameter;
 import io.swagger.v3.oas.models.parameters.RequestBody;
 import io.swagger.v3.oas.models.responses.ApiResponse;
 import io.swagger.v3.oas.models.responses.ApiResponses;
+import io.swagger.v3.parser.core.models.ParseOptions;
+import org.openapitools.codegen.languages.features.CXFServerFeatures;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.testng.Assert;
 import org.testng.annotations.Test;
 
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -654,4 +660,48 @@ public class DefaultCodegenTest {
 
         Assert.assertEquals(imports, expected);
     }
+
+    @Test
+    public void modelDoNotContainInheritedVars() {
+        DefaultCodegen codegen = new DefaultCodegen();
+        codegen.supportsInheritance = true;
+
+        OpenAPI openAPI = new OpenAPIParser()
+                .readLocation("src/test/resources/3_0/generic.yaml", null, new ParseOptions()).getOpenAPI();
+        codegen.setOpenAPI(openAPI);
+
+        CodegenModel codegenModel = codegen.fromModel("Dog", openAPI.getComponents().getSchemas().get("Dog"));
+
+        Assert.assertEquals(codegenModel.vars.size(), 1);
+    }
+
+    @Test
+    public void modelWithPrefixDoNotContainInheritedVars() {
+        DefaultCodegen codegen = new DefaultCodegen();
+        codegen.supportsInheritance = true;
+        codegen.setModelNamePrefix("prefix");
+
+        OpenAPI openAPI = new OpenAPIParser()
+                .readLocation("src/test/resources/3_0/generic.yaml", null, new ParseOptions()).getOpenAPI();
+        codegen.setOpenAPI(openAPI);
+
+        CodegenModel codegenModel = codegen.fromModel("Dog", openAPI.getComponents().getSchemas().get("Dog"));
+
+        Assert.assertEquals(codegenModel.vars.size(), 1);
+    }
+    @Test
+    public void modelWithSuffixDoNotContainInheritedVars() {
+        DefaultCodegen codegen = new DefaultCodegen();
+        codegen.supportsInheritance = true;
+        codegen.setModelNameSuffix("suffix");
+
+        OpenAPI openAPI = new OpenAPIParser()
+                .readLocation("src/test/resources/3_0/generic.yaml", null, new ParseOptions()).getOpenAPI();
+        codegen.setOpenAPI(openAPI);
+
+        CodegenModel codegenModel = codegen.fromModel("Dog", openAPI.getComponents().getSchemas().get("Dog"));
+
+        Assert.assertEquals(codegenModel.vars.size(), 1);
+    }
+
 }