diff --git a/Runtime/Scripts/GLTFSceneImporter.cs b/Runtime/Scripts/GLTFSceneImporter.cs
index 26b85dd1b..a0b536f89 100644
--- a/Runtime/Scripts/GLTFSceneImporter.cs
+++ b/Runtime/Scripts/GLTFSceneImporter.cs
@@ -1039,7 +1039,9 @@ protected virtual async Task ConstructScene(GLTFScene scene, bool showSceneObj,
 							var baseLayer = controller.layers[0];
 							for (int i = 0; i < constructedClips.Count; i++)
 							{
-								var state = baseLayer.stateMachine.AddState(constructedClips[i].name);
+								var name = constructedClips[i].name;
+								if (string.IsNullOrWhiteSpace(name)) name = "clip " + i;
+								var state = baseLayer.stateMachine.AddState(name);
 								state.motion = constructedClips[i];
 							}
 							animator.runtimeAnimatorController = controller;