diff --git a/check.sh b/check.sh
index 2643ba7..e47fbad 100644
--- a/check.sh
+++ b/check.sh
@@ -28,6 +28,10 @@ fi
 echo "${BASE}" | grep -q "/" || BASE="library/${BASE}"
 echo "${TARGET}" | grep -q "/" || TARGET="library/${TARGET}" 
 
+# if no tag is give default to latest
+echo "${BASE}" | grep -q ":" || BASE="${BASE}:latest"
+echo "${TARGET}" | grep -q ":" || TARGET="${TARGET}:latest" 
+
 
 # move tha tag to its own var and remove it from the repo name
 BASE_TAG=$(echo "${BASE}" | sed 's/[^:]*://')
@@ -36,15 +40,6 @@ TARGET_TAG=$(echo "${TARGET}" | sed 's/[^:]*://')
 BASE_REPO=$(echo "${BASE}" | sed 's/:.*//')
 TARGET_REPO=$(echo "${TARGET}" | sed 's/:.*//') 
 
-# if no tag is give default to latest
-if [ -z "${BASE_TAG}" ]; then
-  BASE_TAG="latest"
-fi
-
-if [ -z "${TARGET_TAG}" ]; then
-  TARGET_TAG="latest"
-fi
-
 
 # build the url to the repo
 BASE_URL="https://hub.docker.com/v2/repositories/${BASE_REPO}/tags/${BASE_TAG}"