diff --git a/src/compiler.h b/src/compiler.h
index 3e82ad34b..bbbf50534 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -84,7 +84,7 @@
 // since gcc-2.5
 #ifdef __GNUC__
 #define NORETURN __attribute__((__noreturn__))
-#define FUNCTION __attribute__((__const__))	// no access to global mem, even via ptr, and no side effect
+#define FUNCTION __attribute__((__const__))     // no access to global mem, even via ptr, and no side effect
 #else
 #define NORETURN
 #define FUNCTION