diff --git a/ares/Makefile.dj b/ares/Makefile.dj
index 7ba303ff68598ddd410e45474f23bb4a95191d8e..b87d1bfa8c7617f1bde19ed52d8f7ebcce504501 100644
--- a/ares/Makefile.dj
+++ b/ares/Makefile.dj
@@ -10,7 +10,7 @@ TOPDIR = ..
 include ../packages/DOS/common.dj
 include Makefile.inc
 
-CFLAGS += -DHAVE_CONFIG_H -DWATT32
+CFLAGS += -DWATT32
 
 LDFLAGS = -s