diff --git a/Makefile b/Makefile
index 28ffb6b..0678ede 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,7 @@ windows:
 	GOOS=windows GOARCH=amd64 $(GOBUILD) -o 'ssh_exporter-windows-amd64' ssh_exporter.go
 
 sha256sum:
+	rm ssh_exporter-sha256.txt
 	shasum -a 256 ssh_exporter-* > 'ssh_exporter-sha256.txt'
 
 release: linux darwin windows sha256sum