diff --git a/redis.c b/redis.c
index de4f5763d79acb07a0f00572d6d06ee2a9b77f84..7907bb9f1bbfe35ae0cb019d5198cc12b7c5c9eb 100644
--- a/redis.c
+++ b/redis.c
@@ -54,6 +54,7 @@
 #include <inttypes.h>
 #include <arpa/inet.h>
 #include <sys/stat.h>
+#define __USE_GNU
 #include <fcntl.h>
 #include <sys/time.h>
 #include <sys/resource.h>