diff --git a/Model/Config/Backend/ContainerId.php b/Model/Config/Backend/ContainerId.php
index 58b9f861..d98c65c8 100644
--- a/Model/Config/Backend/ContainerId.php
+++ b/Model/Config/Backend/ContainerId.php
@@ -10,8 +10,8 @@ class ContainerId extends Value
 {
     public function beforeSave()
     {
-        if ($this->validate()) {
-            throw new InvalidConfig('Invalid container ID. It should start with "GTM-"');
+        if (false === $this->validate()) {
+            throw new InvalidConfig('Invalid container ID "' . $this->getValue() . '". It should start with "GTM-"');
         }
 
         return parent::beforeSave();
diff --git a/composer.json b/composer.json
index 7512accc..c50b516c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "name": "yireo/magento2-googletagmanager2",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "license": "OSL-3.0",
   "type": "magento2-module",
   "homepage": "https://www.yireo.com/software/magento-extensions/googletagmanager2",