diff --git a/lang/cem/libcc/gen/malloc.c b/lang/cem/libcc/gen/malloc.c
index 4e7d4dd9..9df169c2 100644
--- a/lang/cem/libcc/gen/malloc.c
+++ b/lang/cem/libcc/gen/malloc.c
@@ -11,7 +11,7 @@ extern bcopy();
 #define BUSY		1
 #define NEXT(p)		(* (char **) (p))
 
-#ifdef pdp11
+#ifdef pdp
 #define BUGFIX	64
 #else
 #define BUGFIX	0