diff --git a/Runtime/Scripts/SceneImporter/ImporterAnimation.cs b/Runtime/Scripts/SceneImporter/ImporterAnimation.cs
index 401220b4b..8a34344bc 100644
--- a/Runtime/Scripts/SceneImporter/ImporterAnimation.cs
+++ b/Runtime/Scripts/SceneImporter/ImporterAnimation.cs
@@ -311,8 +311,7 @@ protected async Task<AnimationClip> ConstructClip(Transform root, int animationI
 							var targetNames = prim.TargetNames;
 							propertyNames = new string[targetCount];
 							for (var i = 0; i < targetCount; i++)
-								propertyNames[i] = _options.ImportBlendShapeNames ? ("blendShape." + (targetNames != null ? targetNames[i] : ("Morphtarget" + i))) : i.ToString();
-
+								propertyNames[i] = _options.ImportBlendShapeNames ? ("blendShape." + (targetNames != null ? targetNames[i] : ("Morphtarget" + i))) : "blendShape."+i.ToString();
 							var frameFloats = new float[targetCount];
 
 							SetAnimationCurve(clip, relativePath, propertyNames, input, output,