diff --git a/AssetStudioGUI/Exporter.cs b/AssetStudioGUI/Exporter.cs
index 6bc77ad..473ce78 100644
--- a/AssetStudioGUI/Exporter.cs
+++ b/AssetStudioGUI/Exporter.cs
@@ -152,6 +152,7 @@ namespace AssetStudioGUI
             #region UV
             if (m_Mesh.m_UV0?.Length > 0)
             {
+                c = 4;
                 if (m_Mesh.m_UV0.Length == m_Mesh.m_VertexCount * 2)
                 {
                     c = 2;