diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java
index ca8e83e56582..28b7d136d16a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java
@@ -1120,6 +1120,7 @@ public ExtendedCodegenParameter(CodegenParameter cp) {
             this.isMap = cp.isMap;
             this.isFile = cp.isFile;
             this.isEnum = cp.isEnum;
+            this.isEnumRef = cp.isEnumRef;
             this._enum = cp._enum;
             this.allowableValues = cp.allowableValues;
             this.items = cp.items;
@@ -1280,6 +1281,7 @@ public ExtendedCodegenProperty(CodegenProperty cp) {
             this.isArray = cp.isArray;
             this.isMap = cp.isMap;
             this.isEnum = cp.isEnum;
+            this.isEnumRef = cp.isEnumRef;
             this.isReadOnly = cp.isReadOnly;
             this.isWriteOnly = cp.isWriteOnly;
             this.isNullable = cp.isNullable;
diff --git a/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache b/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
index fef5aff07b0f..53276d5bf061 100644
--- a/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
@@ -260,11 +260,16 @@ export class {{classname}} extends runtime.BaseAPI {
             formParams.append('{{baseName}}', requestParameters['{{paramName}}'] as any);
             {{/isPrimitiveType}}
             {{^isPrimitiveType}}
+            {{#isEnumRef}}
+            formParams.append('{{baseName}}', requestParameters['{{paramName}}'] as any);
+            {{/isEnumRef}}
+            {{^isEnumRef}}
             {{^withoutRuntimeChecks}}
             formParams.append('{{baseName}}', new Blob([JSON.stringify({{{dataType}}}ToJSON(requestParameters['{{paramName}}']))], { type: "application/json", }));
             {{/withoutRuntimeChecks}}{{#withoutRuntimeChecks}}
             formParams.append('{{baseName}}', new Blob([JSON.stringify(requestParameters['{{paramName}}'])], { type: "application/json", }));
             {{/withoutRuntimeChecks}}
+            {{/isEnumRef}}
             {{/isPrimitiveType}}
             {{/isDateTimeType}}
         }
diff --git a/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/AllOfWithSingleRef.ts b/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/AllOfWithSingleRef.ts
index 2b247b983ffb..4d81b3f96989 100644
--- a/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/AllOfWithSingleRef.ts
+++ b/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/AllOfWithSingleRef.ts
@@ -40,6 +40,8 @@ export interface AllOfWithSingleRef {
     singleRefType?: SingleRefType;
 }
 
+
+
 /**
  * Check if a given object implements the AllOfWithSingleRef interface.
  */
diff --git a/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/OuterObjectWithEnumProperty.ts b/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/OuterObjectWithEnumProperty.ts
index c8ca1734039f..47e184b3414a 100644
--- a/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/OuterObjectWithEnumProperty.ts
+++ b/samples/client/petstore/typescript-fetch/builds/default-v3.0/models/OuterObjectWithEnumProperty.ts
@@ -34,6 +34,8 @@ export interface OuterObjectWithEnumProperty {
     value: OuterEnumInteger;
 }
 
+
+
 /**
  * Check if a given object implements the OuterObjectWithEnumProperty interface.
  */
diff --git a/samples/client/petstore/typescript-fetch/builds/enum/models/EnumPatternObject.ts b/samples/client/petstore/typescript-fetch/builds/enum/models/EnumPatternObject.ts
index fc2c493f04cb..576b5fde62da 100644
--- a/samples/client/petstore/typescript-fetch/builds/enum/models/EnumPatternObject.ts
+++ b/samples/client/petstore/typescript-fetch/builds/enum/models/EnumPatternObject.ts
@@ -58,6 +58,8 @@ export interface EnumPatternObject {
     nullableNumberEnum?: NumberEnum | null;
 }
 
+
+
 /**
  * Check if a given object implements the EnumPatternObject interface.
  */
diff --git a/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetBehaviorTypeResponse.ts b/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetBehaviorTypeResponse.ts
index 5de27f58461d..f3d8f640f8bd 100644
--- a/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetBehaviorTypeResponse.ts
+++ b/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetBehaviorTypeResponse.ts
@@ -46,6 +46,8 @@ export interface GetBehaviorTypeResponse {
     data?: BehaviorType;
 }
 
+
+
 /**
  * Check if a given object implements the GetBehaviorTypeResponse interface.
  */
diff --git a/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetPetPartTypeResponse.ts b/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetPetPartTypeResponse.ts
index 16ec39476732..5e2f514633cf 100644
--- a/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetPetPartTypeResponse.ts
+++ b/samples/client/petstore/typescript-fetch/builds/sagas-and-records/src/models/GetPetPartTypeResponse.ts
@@ -46,6 +46,8 @@ export interface GetPetPartTypeResponse {
     data?: PetPartType;
 }
 
+
+
 /**
  * Check if a given object implements the GetPetPartTypeResponse interface.
  */
diff --git a/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/AllOfWithSingleRef.ts b/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/AllOfWithSingleRef.ts
index 2b247b983ffb..4d81b3f96989 100644
--- a/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/AllOfWithSingleRef.ts
+++ b/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/AllOfWithSingleRef.ts
@@ -40,6 +40,8 @@ export interface AllOfWithSingleRef {
     singleRefType?: SingleRefType;
 }
 
+
+
 /**
  * Check if a given object implements the AllOfWithSingleRef interface.
  */
diff --git a/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/OuterObjectWithEnumProperty.ts b/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/OuterObjectWithEnumProperty.ts
index c8ca1734039f..47e184b3414a 100644
--- a/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/OuterObjectWithEnumProperty.ts
+++ b/samples/client/petstore/typescript-fetch/builds/snakecase-discriminator/models/OuterObjectWithEnumProperty.ts
@@ -34,6 +34,8 @@ export interface OuterObjectWithEnumProperty {
     value: OuterEnumInteger;
 }
 
+
+
 /**
  * Check if a given object implements the OuterObjectWithEnumProperty interface.
  */
diff --git a/samples/client/petstore/typescript-fetch/builds/with-string-enums/models/EnumPatternObject.ts b/samples/client/petstore/typescript-fetch/builds/with-string-enums/models/EnumPatternObject.ts
index fc2c493f04cb..576b5fde62da 100644
--- a/samples/client/petstore/typescript-fetch/builds/with-string-enums/models/EnumPatternObject.ts
+++ b/samples/client/petstore/typescript-fetch/builds/with-string-enums/models/EnumPatternObject.ts
@@ -58,6 +58,8 @@ export interface EnumPatternObject {
     nullableNumberEnum?: NumberEnum | null;
 }
 
+
+
 /**
  * Check if a given object implements the EnumPatternObject interface.
  */