diff --git a/watch-containers.sh b/watch-containers.sh
index 8716aac..dedc3a3 100755
--- a/watch-containers.sh
+++ b/watch-containers.sh
@@ -32,13 +32,11 @@ CHANGELOG=("[2023-10-30][v0.2.0] Complete rewrite based on the new template.sh"
 
 EXECUTABLE="$(basename $0)"
 LIBRARIES="lib.sh"
-DEPENDENCIES="basename dirname readlink jq docker"
+DEPENDENCIES="basename dirname readlink cat jq docker"
 REQUIRE_ROOT=0
 #TODO: make the cache file configurable with an option flag
 CACHE_FILE="/var/cache/watch-containers.json"
 
-ONLY_IN_CACHE=()
-ONLY_IN_CURRENT=()
 
 ##
 ## Functions
@@ -167,6 +165,8 @@ elif [[ -n "${ONLY_IN_CACHE[@]}" ]]; then
   RESULT=$(printf "Missing containers: %s\n" "${ONLY_IN_CACHE[@]}")
 elif [[ -n "${ONLY_IN_CURRENT[@]}" ]]; then
   RESULT=$(printf "New containers: %s\n" "${ONLY_IN_CURRENT[@]}")
+else
+  RESULT=$(printf "No changes detected")
 fi
 
 # Post result to Healthchecks