diff --git a/Makefile.am b/Makefile.am
index 19ab54c..4a07175 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,6 @@
 SUBDIRS = src
 
+CFLAGS = -Wall
 EXTRA_DIST = doc INSTALL README Doxyfile autogen.sh