--- a/tools/env/fw_env.c
+++ b/tools/env/fw_env.c
@@ -21,6 +21,7 @@
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <unistd.h>
+#include <compiler.h>
 
 #ifdef MTD_OLD
 # include <stdint.h>