diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 29988d3..dc77c77 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -490,6 +490,7 @@
 //===----------------------------------------------------------------------===//
 
 TEST_F(FormatTest, UnderstandsSingleLineComments) {
+  verifyFormat("//* */");
   verifyFormat("// line 1\n"
                "// line 2\n"
                "void f() {}\n");