diff --git a/compiler/testData/lineNumber/custom/functionCallWithDefault.kt b/compiler/testData/lineNumber/custom/functionCallWithDefault.kt
index f1a99034a0c..e7e155b002a 100644
--- a/compiler/testData/lineNumber/custom/functionCallWithDefault.kt
+++ b/compiler/testData/lineNumber/custom/functionCallWithDefault.kt
@@ -8,5 +8,5 @@ fun foo(i: Int = 1) {
 
 inline fun bar(i: Int = 1) {
 }
-// IGNORE_BACKEND: JVM_IR
+
 // 2 3 13 14 4 7 6 10 9 15
\ No newline at end of file
diff --git a/compiler/tests-common/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrLineNumberTest.kt b/compiler/tests-common/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrLineNumberTest.kt
index 0e2472771dd..a01faa8259b 100644
--- a/compiler/tests-common/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrLineNumberTest.kt
+++ b/compiler/tests-common/tests/org/jetbrains/kotlin/codegen/ir/AbstractIrLineNumberTest.kt
@@ -25,7 +25,7 @@ abstract class AbstractIrLineNumberTest : AbstractLineNumberTest() {
     override fun compareCustom(psiFile: KtFile, wholeFile: File) {
         val fileText = psiFile.text
         val expectedLineNumbers = normalize(
-            fileText.substring(fileText.indexOf("//") + 2)
+            fileText.substring(Regex("// \\d+").find(fileText)!!.range.start + 2)
                 .trim().split(" ").map { it.trim() }.toMutableList()
         )
         val actualLineNumbers = normalize(extractActualLineNumbersFromBytecode(classFileFactory, false))