diff --git a/check_apt_critical.sh b/check_apt_critical.sh
index 26dd8aa..f44b75c 100755
--- a/check_apt_critical.sh
+++ b/check_apt_critical.sh
@@ -41,7 +41,8 @@ fi
 
 if [[ $CRIT_LEVEL -gt 0 ]] || [[ $WARN_LEVEL -gt 0 ]]; then
   # Only use the levels if the user has set one of them.
-  if [[ $NUM_CRIT_UPDATES -ge $CRIT_LEVEL ]]; then
+  if [[ $CRIT_LEVEL -gt 0 ]] && [[ $NUM_CRIT_UPDATES -ge $CRIT_LEVEL ]]; then
+    # If the crit level is 0, that means the user has only set the --warn flag. We'll just ignore the crit level since that's what they did.
     echo "CRITICAL - $NUM_CRIT_UPDATES critical updates available. | critical_updates=$NUM_CRIT_UPDATES"
     exit 2
   elif [[ $NUM_CRIT_UPDATES -ge $WARN_LEVEL ]]; then