diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/MeshExportInfo.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/MeshExportInfo.cs
index 1299b1c91..be80eba52 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/MeshExportInfo.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/MeshExportInfo.cs
@@ -216,7 +216,7 @@ namespace UniGLTF
                 // TrailRenderer, ParticleSystemRenderer ... etc
             }
 
-            if (Mesh = null)
+            if (Mesh == null)
             {
                 Summary = "no mesh";
             }