diff --git a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs
index 99511a83b..16a41e92b 100644
--- a/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs
+++ b/spine-unity/Assets/Spine/Editor/spine-unity/Editor/Utility/AssetUtility.cs
@@ -399,7 +399,7 @@ namespace Spine.Unity.Editor {
 			List<AtlasAssetBase> newAtlases = new List<AtlasAssetBase>();
 			foreach (string atlasPath in atlasPaths) {
 #if PROBLEMATIC_PACKAGE_ASSET_MODIFICATION
-				if (ap.StartsWith("Packages"))
+				if (atlasPath.StartsWith("Packages"))
 					continue;
 #endif
 				TextAsset atlasText = AssetDatabase.LoadAssetAtPath<TextAsset>(atlasPath);