diff --git a/ext/cityhash/citycrc.h b/ext/cityhash/citycrc.h
index 318e3917ca..054d188a95 100644
--- a/ext/cityhash/citycrc.h
+++ b/ext/cityhash/citycrc.h
@@ -28,7 +28,7 @@
 #ifndef CITY_HASH_CRC_H_
 #define CITY_HASH_CRC_H_
 
-#include <city.h>
+#include "city.h"
 
 // Hash function for a byte array.
 uint128 CityHashCrc128(const char *s, size_t len);