diff -ruN ngrep-1.45.orig/Makefile.in ngrep-1.45/Makefile.in
--- ngrep-1.45.orig/Makefile.in	2006-11-28 16:35:37.000000000 +0300
+++ ngrep-1.45/Makefile.in	2016-06-26 18:56:39.852799652 +0300
@@ -63,7 +63,7 @@
 	rm -f config.status config.cache config.log config.h Makefile 
 
 $(REGEX_OBJS): $(REGEX_OBJS:.o=.c) $(REGEX_DIR)/*.h
-	$(MAKE) $(MAKEFLAGS) -C $(REGEX_DIR) $(notdir $(REGEX_OBJS))
+	$(MAKE) -C $(REGEX_DIR) $(notdir $(REGEX_OBJS))
 
 $(OBJS): Makefile ngrep.c ngrep.h