diff --git a/lib/libclang_rt/profile/Makefile b/lib/libclang_rt/profile/Makefile
index f5860a69dd76..063f8bb11c36 100644
--- a/lib/libclang_rt/profile/Makefile
+++ b/lib/libclang_rt/profile/Makefile
@@ -5,7 +5,7 @@
 LIB=		clang_rt.profile-${CRTARCH}
 
 # This is needed for --coverage
-CFLAGS+=	-fvisibility=default
+CXXFLAGS+=	-fvisibility=default
 
 SRCS+=		profile/GCDAProfiling.c
 SRCS+=		profile/InstrProfiling.c