diff --git a/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateNumber.ts b/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateNumber.ts
index cf8747d482e..d434f282884 100644
--- a/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateNumber.ts
+++ b/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateNumber.ts
@@ -1,13 +1,13 @@
 /// <reference path='fourslash.ts' />
 
 //// abstract class A<T> {
-////    abstract f<T>();
+////    abstract f<T>(x: T);
 //// }
 ////
 //// class C extends A<number> {[|
 //// |]}
 
-verify.rangeAfterCodeFix(`f<number>(){
+verify.rangeAfterCodeFix(`f(x: number){
     throw new Error('Method not Implemented');
 }
 `);
\ No newline at end of file
diff --git a/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateU.ts b/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateU.ts
index 64f74262ba8..7d6b8e1e815 100644
--- a/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateU.ts
+++ b/tests/cases/fourslash/codeFixClassExtendsAbstractMethodTypeParamsInstantiateU.ts
@@ -1,13 +1,13 @@
 /// <reference path='fourslash.ts' />
 
 //// abstract class A<T> {
-////    abstract f<T>();
+////    abstract f<T>(x: T);
 //// }
 ////
 //// class C<U> extends A<U> {[|
 //// |]}
 
-verify.rangeAfterCodeFix(`f<U>(){
+verify.rangeAfterCodeFix(`f(x: U){
     throw new Error('Method not Implemented');
 }
 `);
\ No newline at end of file
diff --git a/tests/cases/fourslash/codeFixUnImplementedInterfaceMissingMethodTypeParams.ts b/tests/cases/fourslash/codeFixUnImplementedInterfaceTypeParamMethod.ts
similarity index 59%
rename from tests/cases/fourslash/codeFixUnImplementedInterfaceMissingMethodTypeParams.ts
rename to tests/cases/fourslash/codeFixUnImplementedInterfaceTypeParamMethod.ts
index 83299f10ecf..bd221ceb8cb 100644
--- a/tests/cases/fourslash/codeFixUnImplementedInterfaceMissingMethodTypeParams.ts
+++ b/tests/cases/fourslash/codeFixUnImplementedInterfaceTypeParamMethod.ts
@@ -1,12 +1,12 @@
 /// <reference path='fourslash.ts' />
 
 //// interface I {
-////     f<T extends number>();
+////     f<T extends number>(x: T);
 //// }
 ////
 //// class C implements I {[| |]}
 
-verify.rangeAfterCodeFix(`f<T extends number>(){
+verify.rangeAfterCodeFix(`f<T extends number>(x: T){
     throw new Error('Method not Implemented');
 }
 `); 
\ No newline at end of file