diff --git a/Makefile b/Makefile
index 81e25a5..2ff0dbe 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,14 @@
 #
 # Makefile for tinysvcmdns
 #
-CPPFLAGS += -DPTHREAD_CREATE_DETACHED_SUPPORTED
+CPPFLAGS += -DPTHREAD_CREATE_DETACHED_SUPPORTED 
+#CPPFLAGS += -DNDEBUG
+CPPFLAGS += $(CPPFLAGS_EXTRA)
 
 CFLAGS += -Wall -pedantic -std=gnu99
 CFLAGS += -g
 CFLAGS += -O2
-#CFLAGS += -DNDEBUG
+CFLAGS += $(CFLAGS_EXTRA)
 LDLIBS = -lpthread
 
 ifneq ($(CROSS_COMPILE),)