diff --git a/libeasy/Makefile b/libeasy/Makefile
index d4d8d3e9d6cebf6648323f1dbe01bf72f0361dc1..a07ce96affe29395774acf5f1e1a5cc030bff2cd 100644
--- a/libeasy/Makefile
+++ b/libeasy/Makefile
@@ -4,7 +4,7 @@ CC = gcc
 CFLAGS += $(DIAG_CFLAGS) -Werror
 #CFLAGS += -O2 -Wall -g -fvisibility=hidden
 
-LIBEASY_CFLAGS = -fvisibility=hidden
+LIBEASY_CFLAGS = -fvisibility=hidden $(DIAG_CFLAGS) -Werror
 
 LIBS += -lnl-3 -lnl-route-3 -lnl-genl-3
 VFLAGS=$(shell ./genversion.sh)