diff --git a/llvm/runtime/libprofile/PathProfiling.c b/llvm/runtime/libprofile/PathProfiling.c
index d2dec02fdcfae74ddbfa91be2c8d9e88eb7f35e5..283678521381383c42c811e21211e7c11ef600a9 100644
--- a/llvm/runtime/libprofile/PathProfiling.c
+++ b/llvm/runtime/libprofile/PathProfiling.c
@@ -26,7 +26,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-// Must use __inline in Microsoft C
+/* Must use __inline in Microsoft C */
 #if defined(_MSC_VER)
 #define inline __inline
 #endif