diff --git a/homebridge.sh b/homebridge.sh
index 6b91ce2..b0e709f 100755
--- a/homebridge.sh
+++ b/homebridge.sh
@@ -7,6 +7,6 @@ VERSION=$(<VERSION)
 FROM=$(<FROM)
 SPECIFIC_FILE=Dockerfile.specific
 IMAGE_NAME=homebridge-v$VERSION
-SED_COMMAND="sed -i '.bak' \"/#####SPECIFIC#####/ r $SPECIFIC_FILE\" Dockerfile"
+SED_COMMAND="sed -i \"/#####SPECIFIC#####/ r $SPECIFIC_FILE\" Dockerfile"
 
 source homebridge-common.sh