diff --git a/project.json b/project.json
index a7a34fa..70045d4 100644
--- a/project.json
+++ b/project.json
@@ -24,7 +24,7 @@
         "description": "ConfigLib is a library for reading and writing configuration files via the NCC Runtime API",
         "company": "Nosial",
         "copyright": "Copyright (c) 2022-2023 Nosial",
-        "version": "1.1.2",
+        "version": "1.1.5",
         "uuid": "9347259e-8e4d-11ed-85a7-fd07cf28ef35"
     },
     "build": {
diff --git a/src/ConfigLib/Configuration.php b/src/ConfigLib/Configuration.php
index 89a7cd7..0a3a20a 100644
--- a/src/ConfigLib/Configuration.php
+++ b/src/ConfigLib/Configuration.php
@@ -170,7 +170,7 @@
          */
         private static function validateKey(string $input): bool
         {
-            if (preg_match('/^([a-zA-Z0-9_]+\.?)+$/', $input))
+            if (preg_match('/^[a-zA-Z0-9_]+(\.[a-zA-Z0-9_]+)*$/', $input))
             {
                 return true;
             }