diff --git a/misc/build.func b/misc/build.func
index cd3d68a..2cb6e58 100644
--- a/misc/build.func
+++ b/misc/build.func
@@ -697,18 +697,14 @@ config_file() {
   fi
 
   if [[ -n "$CT_ID" ]]; then
-
     if [[ "$CT_ID" =~ ^([0-9]{3,4})-([0-9]{3,4})$ ]]; then
       MIN_ID=${BASH_REMATCH[1]}
       MAX_ID=${BASH_REMATCH[2]}
-
       if ((MIN_ID >= MAX_ID)); then
         msg_error "Invalid Container ID range. The first number must be smaller than the second number, was ${CT_ID}"
         exit
       fi
-
       LIST_OF_IDS=$(pvesh get /cluster/resources --type vm --output-format json | grep -oP '"vmid":\s*\K\d+')
-
       if [[ ! -z "$LIST_OF_IDS" ]]; then
         for ((ID = MIN_ID; ID <= MAX_ID; ID++)); do
           if ! grep -q "^$ID$" <<<"$LIST_OF_IDS"; then
@@ -716,20 +712,22 @@ config_file() {
             break
           fi
         done
-      else
-        CT_ID=$MIN_ID
       fi
-
       echo -e "${CONTAINERID}${BOLD}${DGN}Container ID: ${BGN}$CT_ID${CL}"
 
     elif [[ "$CT_ID" =~ ^[0-9]+$ ]]; then
 
       LIST_OF_IDS=$(pvesh get /cluster/resources --type vm --output-format json | grep -oP '"vmid":\s*\K\d+')
-      if ! grep -q "^$CT_ID$" <<<"$LIST_OF_IDS"; then
-        echo -e "${CONTAINERID}${BOLD}${DGN}Container ID: ${BGN}$CT_ID${CL}"
+      if [[ -n "$LIST_OF_IDS" ]]; then
+
+        if ! grep -q "^$CT_ID$" <<<"$LIST_OF_IDS"; then
+          echo -e "${CONTAINERID}${BOLD}${DGN}Container ID: ${BGN}$CT_ID${CL}"
+        else
+          msg_error "Container ID $CT_ID already exists"
+          exit
+        fi
       else
-        msg_error "Container ID $CT_ID already exists"
-        exit
+        echo -e "${CONTAINERID}${BOLD}${DGN}Container ID: ${BGN}$CT_ID${CL}"
       fi
     else
       msg_error "Invalid Container ID format. Needs to be 0000-9999 or 0-9999, was ${CT_ID}"