diff --git a/client/insert.go b/client/insert.go
index d7b78cf7..d2330127 100644
--- a/client/insert.go
+++ b/client/insert.go
@@ -511,7 +511,7 @@ func vector2Placeholder(vectors []entity.Vector) *commonpb.PlaceholderValue {
 	case entity.BFloat16Vector:
 		placeHolderType = commonpb.PlaceholderType_BFloat16Vector
 	case entity.Float16Vector:
-		placeHolderType = commonpb.PlaceholderType_FloatVector
+		placeHolderType = commonpb.PlaceholderType_Float16Vector
 	case entity.SparseEmbedding:
 		placeHolderType = commonpb.PlaceholderType_SparseFloatVector
 	}