diff --git a/dmd2/module.c b/dmd2/module.c
index 7ab17565..f809c8a9 100644
--- a/dmd2/module.c
+++ b/dmd2/module.c
@@ -91,7 +91,7 @@ Module::Module(char *filename, Identifier *ident, int doDocComment, int doHdrGen
     macrotable = NULL;
     escapetable = NULL;
     safe = FALSE;
-#if IN-DMD
+#if IN_DMD
     doppelganger = 0;
     cov = NULL;
     covb = NULL;