diff --git a/lib/Makefile.netware b/lib/Makefile.netware
index b91796cc3875b83319d2834153927e3a18cd396b..16f294a85b31d903e32f139fbb3cd8696b2b40a9 100644
--- a/lib/Makefile.netware
+++ b/lib/Makefile.netware
@@ -94,7 +94,7 @@ LIBARCH_L = $(shell $(AWK) 'BEGIN {print tolower(ARGV[1])}' $(LIBARCH))
 -include $(OBJDIR)/version.inc
 
 # 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
diff --git a/src/Makefile.netware b/src/Makefile.netware
index 72fc4cd22e1a52d2071f102af9a3ecb409eb7ed8..86e593653a0dfd3f6229fd6ee6a942fbecb28f46 100644
--- a/src/Makefile.netware
+++ b/src/Makefile.netware
@@ -94,7 +94,7 @@ LIBARCH_L = $(shell $(AWK) 'BEGIN {print tolower(ARGV[1])}' $(LIBARCH))
 -include $(OBJDIR)/version.inc
 
 # 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