diff --git a/src/Makefile b/src/Makefile
index 972b196..3dc7abd 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -9,6 +9,7 @@ all: test-image
 
 clean:
 	rm -f *.o
+	rm -f test-image
 
 test-image: image.c test-image.c
 	gcc $(CFLAGS) -lmagic -lgd image.c test-image.c -o $@