diff --git a/system/libs/plugins.php b/system/libs/plugins.php
index 420c1cdd..c3b548dc 100644
--- a/system/libs/plugins.php
+++ b/system/libs/plugins.php
@@ -66,7 +66,8 @@ class Plugins {
 					if ($method !== '*') {
 						$methods = is_string($method) ? explode(',', $info['method']) : $method;
 						foreach ($methods as $method) {
-							if (!in_array($method, ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'HEAD'])) {
+							$method = strtolower($method);
+							if (!in_array($method, ['get', 'post', 'put', 'patch', 'delete', 'head'])) {
 								self::$warnings[] = $warningPreTitle . 'Not allowed method ' . $method . '... Disabling this route...';
 							}
 						}
diff --git a/system/router.php b/system/router.php
index 374a53e6..115eb913 100644
--- a/system/router.php
+++ b/system/router.php
@@ -115,6 +115,18 @@ $dispatcher = FastRoute\cachedDispatcher(function (FastRoute\RouteCollector $r)
 		if ($route[0] === '*') {
 			$route[0] = ['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'HEAD'];
 		}
+		else {
+			if (is_string($route[0])) {
+				$route[0] = explode(',', $route[0]);
+			}
+
+			$toUpperCase = function(string $value): string {
+				return trim(strtoupper($value));
+			};
+
+			// convert to upper case, fast-route accepts only upper case
+			$route[0] = array_map($toUpperCase, $route[0]);
+		}
 
 		$aliases = [
 			[':int', ':string', ':alphanum'],