diff --git a/ares/Makefile.netware b/ares/Makefile.netware
index e70d98c992..f723b2e0ae 100644
--- a/ares/Makefile.netware
+++ b/ares/Makefile.netware
@@ -75,7 +75,7 @@ MKDIR	= mkdir
 MPKXDC	= mkxdc
 
 # Global flags for all compilers
-CFLAGS	= $(OPT) -D$(DB) -DNETWARE -DHAVE_CONFIG_H -nostdinc
+CFLAGS	+= $(OPT) -D$(DB) -DNETWARE -DHAVE_CONFIG_H -nostdinc
 
 ifeq ($(CC),mwccnlm)
 LD	= mwldnlm