diff --git a/makefile b/makefile
index 76c140c..6ae6c9b 100644
--- a/makefile
+++ b/makefile
@@ -30,7 +30,7 @@ ex-5: ex-5/bin/main
 ex-5/bin/%: ex-5/%.c
 	$(CCOMPILE)
 
-ex-6: ex-6/bin/main
+ex-6: ex-6/bin/main ex-6/bin/test
 ex-6/bin/main: ex-6/main.c ex-6/common.c ex-6/rl.c ex-6/fft.c
 	$(CCOMPILE)
 ex-6/bin/test: ex-6/test.c ex-6/common.c ex-6/rl.c ex-6/fft.c ex-6/dist.c