diff --git a/idea/src/org/jetbrains/kotlin/idea/quickfix/AddFunctionParametersFix.kt b/idea/src/org/jetbrains/kotlin/idea/quickfix/AddFunctionParametersFix.kt
index 8fb8e94ec6b..5807027ac52 100644
--- a/idea/src/org/jetbrains/kotlin/idea/quickfix/AddFunctionParametersFix.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/quickfix/AddFunctionParametersFix.kt
@@ -146,8 +146,7 @@ class AddFunctionParametersFix(
                             argument,
                             validator
                         )
-                        val receiverCount = if (descriptor.receiver != null) 1 else 0
-                        descriptor.addParameter(argumentIndex + receiverCount, parameterInfo)
+                        descriptor.addParameter(argumentIndex, parameterInfo)
                         return
                     }
 
diff --git a/idea/testData/quickfix/changeSignature/addExtensionFunctionParameterForTypeMismatch.kt b/idea/testData/quickfix/changeSignature/addExtensionFunctionParameterForTypeMismatch.kt
deleted file mode 100644
index 4aee89fb796..00000000000
--- a/idea/testData/quickfix/changeSignature/addExtensionFunctionParameterForTypeMismatch.kt
+++ /dev/null
@@ -1,8 +0,0 @@
-// "Add 2nd parameter to function 'bar'" "true"
-interface Foo
-
-private fun Foo.bar(s: String, i: Int) {}
-
-fun test(foo: Foo, b: Boolean) {
-    foo.bar("", b<caret>, 0)
-}
\ No newline at end of file
diff --git a/idea/testData/quickfix/changeSignature/addExtensionFunctionParameterForTypeMismatch.kt.after b/idea/testData/quickfix/changeSignature/addExtensionFunctionParameterForTypeMismatch.kt.after
deleted file mode 100644
index 1b948222593..00000000000
--- a/idea/testData/quickfix/changeSignature/addExtensionFunctionParameterForTypeMismatch.kt.after
+++ /dev/null
@@ -1,8 +0,0 @@
-// "Add 2nd parameter to function 'bar'" "true"
-interface Foo
-
-private fun Foo.bar(s: String, b: Boolean, i: Int) {}
-
-fun test(foo: Foo, b: Boolean) {
-    foo.bar("", b, 0)
-}
\ No newline at end of file
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt
index dbe7bd03f56..b0d530d4179 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt
@@ -1,4 +1,5 @@
 // "Add 1st parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i1: Int, i2: Int, i3: Int, i4: Int) {
 }
 
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt.after b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt.after
index a34e70071ff..92ee6ee28e4 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt.after
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch1.kt.after
@@ -1,4 +1,5 @@
 // "Add 1st parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i11: String, i1: Int, i2: Int, i3: Int, i4: Int) {
 }
 
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt
index 7682eebc7b7..d3561715121 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt
@@ -1,4 +1,5 @@
 // "Add 2nd parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i1: Int, i2: Int, i3: Int, i4: Int) {
 }
 
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt.after b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt.after
index 67140a712ca..9c7920ae268 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt.after
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch2.kt.after
@@ -1,4 +1,5 @@
 // "Add 2nd parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i1: Int, i21: String, i2: Int, i3: Int, i4: Int) {
 }
 
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt
index f5504f477f8..196d9fe4aa5 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt
@@ -1,4 +1,5 @@
 // "Add 3rd parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i1: Int, i2: Int, i3: Int, i4: Int) {
 }
 
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt.after b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt.after
index 31130e6b3d7..f9253f50376 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt.after
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch3.kt.after
@@ -1,4 +1,5 @@
 // "Add 3rd parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i1: Int, i2: Int, i31: String, i3: Int, i4: Int) {
 }
 
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt
index 577f60bc644..dfa9286f3b0 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt
@@ -1,4 +1,5 @@
 // "Add 4th parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i1: Int, i2: Int, i3: Int, i4: Int) {
 }
 
diff --git a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt.after b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt.after
index 1e956c2bef9..1b634f2f21e 100644
--- a/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt.after
+++ b/idea/testData/quickfix/changeSignature/addFunctionParameterForTypeMismatch4.kt.after
@@ -1,4 +1,5 @@
 // "Add 4th parameter to function 'foo'" "true"
+// DISABLE-ERRORS
 fun foo(i1: Int, i2: Int, i3: Int, i41: String, i4: Int) {
 }
 
diff --git a/idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java b/idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java
index dfa48502dd2..e651eba8be6 100644
--- a/idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java
+++ b/idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java
@@ -2306,11 +2306,6 @@ public class QuickFixTestGenerated extends AbstractQuickFixTest {
             runTest("idea/testData/quickfix/changeSignature/addEnumConstructorParameter5.kt");
         }
 
-        @TestMetadata("addExtensionFunctionParameterForTypeMismatch.kt")
-        public void testAddExtensionFunctionParameterForTypeMismatch() throws Exception {
-            runTest("idea/testData/quickfix/changeSignature/addExtensionFunctionParameterForTypeMismatch.kt");
-        }
-
         @TestMetadata("addForItParameter.kt")
         public void testAddForItParameter() throws Exception {
             runTest("idea/testData/quickfix/changeSignature/addForItParameter.kt");