diff --git a/addons/deSEC/desec_subdomain.sh b/addons/deSEC/desec_subdomain.sh
index f6037234..eff1c038 100644
--- a/addons/deSEC/desec_subdomain.sh
+++ b/addons/deSEC/desec_subdomain.sh
@@ -29,13 +29,16 @@ fi
 while :
 do
     # Ask for subdomain
-    SUBDOMAIN=$(input_box_flow "Please enter the subdomain you want to add or delete, e.g: yoursubdomain")
-    # Check if subdomain contains a dot
-    if echo "$SUBDOMAIN" | grep '\.' >/dev/null 2>&1
+    if [ -z $SUBDOMAIN ]
     then
-        msg_box "Please *only* enter the subomain name like 'yoursubdomain', not 'yoursubdomain.yourdomain.io'."
-    else
-        break
+        SUBDOMAIN=$(input_box_flow "Please enter the subdomain you want to add or delete, e.g: yoursubdomain")
+        # Check if subdomain contains a dot
+        if echo "$SUBDOMAIN" | grep '\.' >/dev/null 2>&1
+        then
+            msg_box "Please *only* enter the subomain name like 'yoursubdomain', not 'yoursubdomain.yourdomain.io'."
+        else
+            break
+        fi
     fi
 done