diff --git a/include/msgpack/sysdep.h b/include/msgpack/sysdep.h
index b1ee1488..2884d833 100644
--- a/include/msgpack/sysdep.h
+++ b/include/msgpack/sysdep.h
@@ -51,9 +51,9 @@
 #elif defined(__GNUC__) && ((__GNUC__*10 + __GNUC_MINOR__) < 41)
 
 #   if defined(__cplusplus)
-#       define _msgpack_atomic_counter_header "gcc_atomic.hpp"
+#       define _msgpack_atomic_counter_header "msgpack/gcc_atomic.hpp"
 #   else
-#       define _msgpack_atomic_counter_header "gcc_atomic.h"
+#       define _msgpack_atomic_counter_header "msgpack/gcc_atomic.h"
 #   endif
 
 #else