diff --git a/packages/angular-query-experimental/src/__tests__/inject-mutation.test-d.ts b/packages/angular-query-experimental/src/__tests__/inject-mutation.test-d.ts
index edf52275f6..cae6bac1af 100644
--- a/packages/angular-query-experimental/src/__tests__/inject-mutation.test-d.ts
+++ b/packages/angular-query-experimental/src/__tests__/inject-mutation.test-d.ts
@@ -106,7 +106,7 @@ describe('injectMutation', () => {
 
   it('should type context as the last argument for mutationFn and every hook-level callback', () => {
     injectMutation(() => ({
-      mutationFn: (_vars: string, context) => {
+      mutationFn: (_variables, context) => {
         expectTypeOf(context).toEqualTypeOf<MutationFunctionContext>()
         expectTypeOf(context.client).toEqualTypeOf<QueryClient>()
         return Promise.resolve('data')
diff --git a/packages/preact-query/src/__tests__/useMutation.test-d.tsx b/packages/preact-query/src/__tests__/useMutation.test-d.tsx
index 2844e61783..2e6498141a 100644
--- a/packages/preact-query/src/__tests__/useMutation.test-d.tsx
+++ b/packages/preact-query/src/__tests__/useMutation.test-d.tsx
@@ -151,7 +151,7 @@ describe('useMutation', () => {
 
   it('should type context as the last argument for mutationFn and every hook-level callback', () => {
     useMutation({
-      mutationFn: (_vars: string, context) => {
+      mutationFn: (_variables, context) => {
         expectTypeOf(context).toEqualTypeOf<MutationFunctionContext>()
         expectTypeOf(context.client).toEqualTypeOf<QueryClient>()
         return Promise.resolve('data')
diff --git a/packages/react-query/src/__tests__/useMutation.test-d.tsx b/packages/react-query/src/__tests__/useMutation.test-d.tsx
index 2844e61783..2e6498141a 100644
--- a/packages/react-query/src/__tests__/useMutation.test-d.tsx
+++ b/packages/react-query/src/__tests__/useMutation.test-d.tsx
@@ -151,7 +151,7 @@ describe('useMutation', () => {
 
   it('should type context as the last argument for mutationFn and every hook-level callback', () => {
     useMutation({
-      mutationFn: (_vars: string, context) => {
+      mutationFn: (_variables, context) => {
         expectTypeOf(context).toEqualTypeOf<MutationFunctionContext>()
         expectTypeOf(context.client).toEqualTypeOf<QueryClient>()
         return Promise.resolve('data')
diff --git a/packages/solid-query/src/__tests__/useMutation.test-d.tsx b/packages/solid-query/src/__tests__/useMutation.test-d.tsx
index 6bf8c468e5..5a50664962 100644
--- a/packages/solid-query/src/__tests__/useMutation.test-d.tsx
+++ b/packages/solid-query/src/__tests__/useMutation.test-d.tsx
@@ -152,7 +152,7 @@ describe('useMutation', () => {
 
   it('should type context as the last argument for mutationFn and every hook-level callback', () => {
     useMutation(() => ({
-      mutationFn: (_vars: string, context) => {
+      mutationFn: (_variables, context) => {
         expectTypeOf(context).toEqualTypeOf<MutationFunctionContext>()
         expectTypeOf(context.client).toEqualTypeOf<QueryCoreClient>()
         return Promise.resolve('data')
diff --git a/packages/svelte-query/tests/createMutation/createMutation.test-d.ts b/packages/svelte-query/tests/createMutation/createMutation.test-d.ts
index cc1cfa6c1a..643515398b 100644
--- a/packages/svelte-query/tests/createMutation/createMutation.test-d.ts
+++ b/packages/svelte-query/tests/createMutation/createMutation.test-d.ts
@@ -151,7 +151,7 @@ describe('createMutation', () => {
 
   it('should type context as the last argument for mutationFn and every hook-level callback', () => {
     createMutation(() => ({
-      mutationFn: (_vars: string, context) => {
+      mutationFn: (_variables, context) => {
         expectTypeOf(context).toEqualTypeOf<MutationFunctionContext>()
         expectTypeOf(context.client).toEqualTypeOf<QueryClient>()
         return Promise.resolve('data')