diff --git a/Makefile b/Makefile
index 03350c8..e721092 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CFLAGS=-Wall -g -DNDEBUG
+CFLAGS=-Wall -Wextra -pedantic-errors -g -DNDEBUG
 
 EXERCISES = $(patsubst %.c,%,$(shell ls ex*.c | egrep -v "ex(19|22)"))