diff --git a/scst/include/scst.h b/scst/include/scst.h
index 339c32934..b47ce4b7e 100644
--- a/scst/include/scst.h
+++ b/scst/include/scst.h
@@ -86,7 +86,7 @@ typedef _Bool bool;
 #define __packed __attribute__((packed))
 #endif
 #ifndef __aligned
-#define __aligned __attribute__((aligned))
+#define __aligned(x) __attribute__((aligned(x)))
 #endif
 #endif