diff --git a/main/gcc-attr.h b/main/gcc-attr.h
index fc53a62315..45b1de585a 100644
--- a/main/gcc-attr.h
+++ b/main/gcc-attr.h
@@ -16,10 +16,12 @@
 #if defined (__GNUC__) && !defined (__GNUG__)
 # define CTAGS_ATTR_UNUSED __attribute__((unused))
 # define CTAGS_ATTR_PRINTF(s,f)  __attribute__((format (printf, s, f)))
+# define CTAGA_ATTR_ALIGNED(X) __attribute__((aligned(X)))
 # define attr__noreturn __attribute__((__noreturn__))
 #else
 # define CTAGS_ATTR_UNUSED
 # define CTAGS_ATTR_PRINTF(s,f)
+# define CTAGA_ATTR_ALIGNED(X)
 # define attr__noreturn
 #endif