diff --git a/src/mod/endpoints/mod_iax/Makefile b/src/mod/endpoints/mod_iax/Makefile
index 4d4ab0cab6..dbaa0e1e9f 100644
--- a/src/mod/endpoints/mod_iax/Makefile
+++ b/src/mod/endpoints/mod_iax/Makefile
@@ -1,5 +1,5 @@
 BASE=../../../..
-LOCAL_CFLAGS=-I. -DNEWJB -DLIBIAX
+LOCAL_CFLAGS=-I. -DNEWJB -DLIBIAX -DDEBUG_SUPPORT
 LOCAL_OBJS=iax2-parser.o iax.o md5.o jitterbuf.o iax-mutex.o
 
 include $(BASE)/build/modmake.rules