diff --git a/compiler/testData/diagnostics/tests/cast/neverSucceeds/MappedSubtypes.txt b/compiler/testData/diagnostics/tests/cast/neverSucceeds/MappedSubtypes.txt
index e2ae3918dd2..a7a48cbcee1 100644
--- a/compiler/testData/diagnostics/tests/cast/neverSucceeds/MappedSubtypes.txt
+++ b/compiler/testData/diagnostics/tests/cast/neverSucceeds/MappedSubtypes.txt
@@ -18,6 +18,6 @@ public final class Sub : kotlin.CharSequence {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public abstract override /*1*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/j+k/collectionOverrides/getCharSequence.txt b/compiler/testData/diagnostics/tests/j+k/collectionOverrides/getCharSequence.txt
index 91dfbecd225..6b212417edc 100644
--- a/compiler/testData/diagnostics/tests/j+k/collectionOverrides/getCharSequence.txt
+++ b/compiler/testData/diagnostics/tests/j+k/collectionOverrides/getCharSequence.txt
@@ -8,7 +8,7 @@ public abstract class A : kotlin.CharSequence {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ fun get(/*0*/ x: kotlin.Int): kotlin.Char
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
@@ -18,7 +18,7 @@ public abstract class B : A, kotlin.CharSequence {
     public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*2*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public abstract override /*2*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public abstract override /*2*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
@@ -28,6 +28,6 @@ public abstract class C : kotlin.CharSequence {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequence.txt b/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequence.txt
index cd494fa5f8a..8012e1e0e6c 100644
--- a/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequence.txt
+++ b/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequence.txt
@@ -8,7 +8,7 @@ public open class A : AImpl, kotlin.CharSequence {
     public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*2*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public open override /*1*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
@@ -27,6 +27,6 @@ public final class X : A {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public open override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequenceKotlin.txt b/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequenceKotlin.txt
index fbdaaa36f03..a397092ac00 100644
--- a/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequenceKotlin.txt
+++ b/compiler/testData/diagnostics/tests/j+k/collectionOverrides/irrelevantImplCharSequenceKotlin.txt
@@ -8,7 +8,7 @@ public open class A : AImpl, kotlin.CharSequence {
     public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public final override /*2*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public open override /*1*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
@@ -27,6 +27,6 @@ public final class X : A {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public final override /*1*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public open override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/diagnostics/tests/j+k/kt1730_implementCharSequence.txt b/compiler/testData/diagnostics/tests/j+k/kt1730_implementCharSequence.txt
index 83585c73223..e6b1b322da8 100644
--- a/compiler/testData/diagnostics/tests/j+k/kt1730_implementCharSequence.txt
+++ b/compiler/testData/diagnostics/tests/j+k/kt1730_implementCharSequence.txt
@@ -6,7 +6,7 @@ public open class C : kotlin.CharSequence {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     @java.lang.Override() public open override /*1*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    @java.lang.Override() public open override /*1*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    @java.lang.Override() public open override /*1*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     @java.lang.Override() public open override /*1*/ fun toString(): kotlin.String
 }
 
@@ -16,6 +16,6 @@ public final class T : C {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     @java.lang.Override() public open override /*1*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    @java.lang.Override() public open override /*1*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    @java.lang.Override() public open override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
     @java.lang.Override() public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
diff --git a/compiler/testData/loadJava/compiledKotlin/annotations/types/SupertypesAndBounds.txt b/compiler/testData/loadJava/compiledKotlin/annotations/types/SupertypesAndBounds.txt
index 244289f0fab..8966e6532dd 100644
--- a/compiler/testData/loadJava/compiledKotlin/annotations/types/SupertypesAndBounds.txt
+++ b/compiler/testData/loadJava/compiledKotlin/annotations/types/SupertypesAndBounds.txt
@@ -9,5 +9,5 @@ public interface Foo</*0*/ T : @test.A() kotlin.Number> : @test.A() kotlin.CharS
         public abstract override /*1*/ /*fake_override*/ fun <get-length>(): kotlin.Int
     public abstract fun </*0*/ E, /*1*/ F : @test.A() E> bar(): kotlin.Unit
     public abstract override /*1*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
-    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ start: kotlin.Int, /*1*/ end: kotlin.Int): kotlin.CharSequence
+    public abstract override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
 }