diff --git a/util/ceg/EM_parser/as_EM_pars/proto.make b/util/ceg/EM_parser/as_EM_pars/proto.make
index 213057cda..cbe983ed4 100644
--- a/util/ceg/EM_parser/as_EM_pars/proto.make
+++ b/util/ceg/EM_parser/as_EM_pars/proto.make
@@ -13,7 +13,7 @@ HFILES = $(SRC_DIR)/arg_type.h $(SRC_DIR)/em_decl.h $(SRC_DIR)/em_parser.h
 
 IFILES = -I$(TARGET_HOME)/h -I$(TARGET_HOME)/modules/h
 
-CFLAGS = $(COPTIONS) $(IFILES)
+CFLAGS = $(COPTIONS) $(IFILES) -DNDEBUG
 
 all :	$(OFILES)