diff --git a/docs/src/pages/guides/fetch-client.md b/docs/src/pages/guides/fetch-client.md
index 94f8b7e3f..87d0258f7 100644
--- a/docs/src/pages/guides/fetch-client.md
+++ b/docs/src/pages/guides/fetch-client.md
@@ -48,7 +48,8 @@ export const listPets = async (
     ...options,
     method: 'GET',
   });
-  const data = await res.json();
+  const data: Pets =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data };
 };
@@ -133,10 +134,11 @@ export const listPets = async (
     ...options,
     method: 'GET',
   });
-  const data = await res.json();
+  const data: Pets =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
 -  return { status: res.status, data };
-+  return data as Pet;
++  return data;
 };
 ```
 
diff --git a/packages/fetch/src/index.ts b/packages/fetch/src/index.ts
index ffaab0414..5a827b474 100644
--- a/packages/fetch/src/index.ts
+++ b/packages/fetch/src/index.ts
@@ -183,7 +183,7 @@ ${
   `
     : `const res = await fetch(${fetchFnOptions})
 
-  const data:${response.definition.success}  = await res.json()
+  const data:${response.definition.success} = ([204, 205, 304].includes(res.status) || !res.body) ? {} : await res.json()
 
   ${override.fetch.includeHttpResponseReturnType ? 'return { status: res.status, data, headers: res.headers }' : `return data as ${responseTypeName}`}
 `;
diff --git a/samples/hono/hono-with-fetch-client/next-app/app/gen/pets/pets.ts b/samples/hono/hono-with-fetch-client/next-app/app/gen/pets/pets.ts
index 6e90ba74c..9334774a2 100644
--- a/samples/hono/hono-with-fetch-client/next-app/app/gen/pets/pets.ts
+++ b/samples/hono/hono-with-fetch-client/next-app/app/gen/pets/pets.ts
@@ -44,7 +44,8 @@ export const listPets = async (
     method: 'GET',
   });
 
-  const data: Pets = await res.json();
+  const data: Pets =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };
@@ -73,7 +74,8 @@ export const createPets = async (
     body: JSON.stringify(createPetsBodyItem),
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };
@@ -102,7 +104,8 @@ export const updatePets = async (
     body: JSON.stringify(pet),
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };
@@ -129,7 +132,8 @@ export const showPetById = async (
     method: 'GET',
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };
diff --git a/samples/react-app-with-swr/fetch-client/src/api/endpoints/swaggerPetstore.ts b/samples/react-app-with-swr/fetch-client/src/api/endpoints/swaggerPetstore.ts
index cfc3c0ad2..2bc088a8f 100644
--- a/samples/react-app-with-swr/fetch-client/src/api/endpoints/swaggerPetstore.ts
+++ b/samples/react-app-with-swr/fetch-client/src/api/endpoints/swaggerPetstore.ts
@@ -42,7 +42,8 @@ export const listPets = async (
     method: 'GET',
   });
 
-  const data: Pets = await res.json();
+  const data: Pets =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return data as Pets;
 };
@@ -105,7 +106,8 @@ export const createPets = async (
     body: JSON.stringify(createPetsBody),
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return data as Pet;
 };
@@ -165,7 +167,8 @@ export const showPetById = async (
     method: 'GET',
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return data as Pet;
 };
diff --git a/samples/swr-with-zod/src/gen/endpoints/pets/pets.ts b/samples/swr-with-zod/src/gen/endpoints/pets/pets.ts
index e46762ac6..11a000be7 100644
--- a/samples/swr-with-zod/src/gen/endpoints/pets/pets.ts
+++ b/samples/swr-with-zod/src/gen/endpoints/pets/pets.ts
@@ -76,7 +76,8 @@ export const listPets = async (
     method: 'GET',
   });
 
-  const data: Pets = await res.json();
+  const data: Pets =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };
@@ -144,7 +145,8 @@ export const createPets = async (
     body: JSON.stringify(createPetsBodyItem),
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };
@@ -214,7 +216,8 @@ export const updatePets = async (
     body: JSON.stringify(pet),
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };
@@ -282,7 +285,8 @@ export const showPetById = async (
     method: 'GET',
   });
 
-  const data: Pet = await res.json();
+  const data: Pet =
+    [204, 205, 304].includes(res.status) || !res.body ? {} : await res.json();
 
   return { status: res.status, data, headers: res.headers };
 };