diff --git a/junit-jupiter-api/src/main/kotlin/org/junit/jupiter/api/Assertions.kt b/junit-jupiter-api/src/main/kotlin/org/junit/jupiter/api/Assertions.kt
index 6105579258f..ebf8a395905 100644
--- a/junit-jupiter-api/src/main/kotlin/org/junit/jupiter/api/Assertions.kt
+++ b/junit-jupiter-api/src/main/kotlin/org/junit/jupiter/api/Assertions.kt
@@ -33,13 +33,14 @@ fun fail(message: String?, throwable: Throwable? = null): Nothing =
 /**
  * @see Assertions.fail
  */
+@API(since = "5.11", status = EXPERIMENTAL)
 @JvmName("fail_nonNullableLambda")
 fun fail(message: () -> String): Nothing {
     contract {
         callsInPlace(message, UNKNOWN)
     }
 
-    return Assertions.fail<Nothing>(message)
+    return Assertions.fail(message)
 }
 
 /**