diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 5b99716..f5606cb 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -479,6 +479,8 @@
 
   verifyFormat("someFunction(anotherFunction( // Force break.\n"
                "    parameter));");
+
+  verifyGoogleFormat("#endif  // HEADER_GUARD");
 }
 
 TEST_F(FormatTest, UnderstandsMultiLineComments) {