diff --git a/Makefile.linux b/Makefile.linux
index 3c8599e..15eefab 100644
--- a/Makefile.linux
+++ b/Makefile.linux
@@ -3,7 +3,7 @@ OBJS=$(SRCS:%.c=%.o)
 
 TARGET=libmqtt.a
 
-PLATFORM_FLAGS=-DMAX_BUFFER_SIZE=256
+PLATFORM_FLAGS=-DMAX_BUFFER_SIZE=256 -DDEBUG=1
 
 AR=ar
 CC=clang