diff --git a/runtime/src/main/kotlin/kotlin/test/Assertions.kt b/runtime/src/main/kotlin/kotlin/test/Assertions.kt
index bddcf004857..98d6b295de9 100644
--- a/runtime/src/main/kotlin/kotlin/test/Assertions.kt
+++ b/runtime/src/main/kotlin/kotlin/test/Assertions.kt
@@ -38,4 +38,10 @@ internal actual fun <T : Throwable> checkResultIsFailure(exceptionClass: KClass<
     )
 }
 
+/** Platform-specific construction of AssertionError with cause */
+@Suppress("NOTHING_TO_INLINE")
+internal actual inline fun AssertionErrorWithCause(message: String?, cause: Throwable?): AssertionError =
+        AssertionError(message, cause)
+
+
 internal actual fun lookupAsserter(): Asserter = DefaultAsserter
\ No newline at end of file