diff --git a/Makefile b/Makefile
index 73a60b35..f6e1fb27 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,12 @@
 #	Last Modified: 2014/03/31
 #==========================================
 
-CC=gcc
-CFLAGS=-O
+all: sl
 
 sl: sl.c sl.h
 	$(CC) $(CFLAGS) -o sl sl.c -lncurses
+
+clean:
+	rm -f sl
+
+distclean: clean