diff --git a/sk1/Makefile b/sk1/Makefile
index d65f264..491f6bb 100644
--- a/sk1/Makefile
+++ b/sk1/Makefile
@@ -1,7 +1,7 @@
 all: program
 
 program: compressor.c main.c
-	gcc compressor.c main.c -o
+	gcc	compressor.c	main.c	-o
 program
 
 clean: