diff --git a/tests/run/StringConcat.scala b/tests/run/StringConcat.scala
index d0a9c32e1016..96d97bf6e664 100644
--- a/tests/run/StringConcat.scala
+++ b/tests/run/StringConcat.scala
@@ -1,3 +1,9 @@
+// scalajs: --skip
+
+// Under JVM 8,
+// this sometimes blows a StackOverflowError
+// in PrepJSInterop
+
 @main def Test() = {
 
   // This should generally obey 15.18.1. of the JLS (String Concatenation Operator +)