diff --git a/native/commonizer/tests/org/jetbrains/kotlin/commonizer/core/AbstractCommonizerTest.kt b/native/commonizer/tests/org/jetbrains/kotlin/commonizer/core/AbstractCommonizerTest.kt
index 0db39cf1f38..7e69e59ce78 100644
--- a/native/commonizer/tests/org/jetbrains/kotlin/commonizer/core/AbstractCommonizerTest.kt
+++ b/native/commonizer/tests/org/jetbrains/kotlin/commonizer/core/AbstractCommonizerTest.kt
@@ -28,8 +28,8 @@ abstract class AbstractCommonizerTest<T, R> {
         check(variants.isNotEmpty())
 
         val commonized = createCommonizer().apply {
-            variants.forEach {
-                assertTrue(commonizeWith(it))
+            variants.forEachIndexed { index, value ->
+                assertTrue(commonizeWith(value), "Expected successful commonization, but failed at index $index ($value)")
             }
         }