diff --git a/app/Http/Controllers/SkinlibController.php b/app/Http/Controllers/SkinlibController.php
index 8a434dc7e..f11ff6157 100644
--- a/app/Http/Controllers/SkinlibController.php
+++ b/app/Http/Controllers/SkinlibController.php
@@ -221,7 +221,7 @@ public function handleUpload(
         $size = getimagesize($file);
         $ratio = $size[0] / $size[1];
         if ($type == 'steve' || $type == 'alex') {
-            if ($ratio != 2 && $ratio != 1) {
+            if ($ratio != 2 && $ratio != 1 || $type === 'alex' && $ratio === 2) {
                 $message = trans('skinlib.upload.invalid-size', [
                     'type' => trans('general.skin'),
                     'width' => $size[0],
diff --git a/tests/HttpTest/ControllersTest/SkinlibControllerTest.php b/tests/HttpTest/ControllersTest/SkinlibControllerTest.php
index d1db219bb..2693ec082 100644
--- a/tests/HttpTest/ControllersTest/SkinlibControllerTest.php
+++ b/tests/HttpTest/ControllersTest/SkinlibControllerTest.php
@@ -321,6 +321,19 @@ public function testHandleUpload()
             'name' => 'texture',
             'public' => true,
             'type' => 'alex',
+            'file' => UploadedFile::fake()->image('texture.png', 64, 32),
+        ])->assertJson([
+            'code' => 1,
+            'message' => trans('skinlib.upload.invalid-size', [
+                'type' => trans('general.skin'),
+                'width' => 64,
+                'height' => 32,
+            ]),
+        ]);
+        $this->postJson(route('texture.upload'), [
+            'name' => 'texture',
+            'public' => true,
+            'type' => 'steve',
             'file' => UploadedFile::fake()->image('texture.png', 100, 50),
         ])->assertJson([
             'code' => 1,