diff --git a/plugins/power-assert/power-assert.backend/src/org/jetbrains/kotlin/powerassert/diagram/IrDiagram.kt b/plugins/power-assert/power-assert.backend/src/org/jetbrains/kotlin/powerassert/diagram/IrDiagram.kt
index 9b780415405..4a6a8c798e0 100644
--- a/plugins/power-assert/power-assert.backend/src/org/jetbrains/kotlin/powerassert/diagram/IrDiagram.kt
+++ b/plugins/power-assert/power-assert.backend/src/org/jetbrains/kotlin/powerassert/diagram/IrDiagram.kt
@@ -192,7 +192,6 @@ private fun memberAccessOffset(
             ?: return 0
         val expressionInfo = sourceFile.getSourceRangeInfo(expression)
         var offset = receiver.endOffset - expressionInfo.startOffset + 1
-        if (receiver is IrConst<*> && receiver.kind == IrConstKind.String) offset++ // String constants don't include the quote
         if (offset < 0 || offset >= source.length) return 0 // infix function called using non-infix syntax
 
         // Continue until there is a non-whitespace character
diff --git a/plugins/power-assert/testData/codegen/infix/RegexFunction.kt b/plugins/power-assert/testData/codegen/infix/RegexFunction.kt
index e295a721edb..1c60cbe717e 100644
--- a/plugins/power-assert/testData/codegen/infix/RegexFunction.kt
+++ b/plugins/power-assert/testData/codegen/infix/RegexFunction.kt
@@ -1,7 +1,3 @@
-// IGNORE_BACKEND_K1: JVM_IR
-// IGNORE_BACKEND_K2: JVM_IR
-// Disabled because of KT-65640
-
 fun box() = expectThrowableMessage {
     assert("Hello, World".matches("[A-Za-z]+".toRegex()))
 }
diff --git a/plugins/power-assert/testData/codegen/infix/RegexInfix.kt b/plugins/power-assert/testData/codegen/infix/RegexInfix.kt
index 55954833e3c..d3df1793097 100644
--- a/plugins/power-assert/testData/codegen/infix/RegexInfix.kt
+++ b/plugins/power-assert/testData/codegen/infix/RegexInfix.kt
@@ -1,7 +1,3 @@
-// IGNORE_BACKEND_K1: JVM_IR
-// IGNORE_BACKEND_K2: JVM_IR
-// Disabled because of KT-65640
-
 fun box() = expectThrowableMessage {
     assert("Hello, World" matches "[A-Za-z]+".toRegex())
 }