diff --git a/Source/Editor/Content/Thumbnails/ThumbnailsModule.cs b/Source/Editor/Content/Thumbnails/ThumbnailsModule.cs
index b3d7ffa49..524bebfc3 100644
--- a/Source/Editor/Content/Thumbnails/ThumbnailsModule.cs
+++ b/Source/Editor/Content/Thumbnails/ThumbnailsModule.cs
@@ -496,7 +496,7 @@ namespace FlaxEditor.Content.Thumbnails
                     // Prepare requests
                     bool isAnyReady = false;
                     int checks = Mathf.Min(10, _requests.Count);
-                    for (int i = 0; i < checks; i++)
+                    for (int i = 0; i < checks && i < _requests.Count; i++)
                     {
                         var request = _requests[i];
                         try