diff --git a/internal/querynodev2/segments/index_attr_cache.go b/internal/querynodev2/segments/index_attr_cache.go
index a4f9cc5161..1beb575dc3 100644
--- a/internal/querynodev2/segments/index_attr_cache.go
+++ b/internal/querynodev2/segments/index_attr_cache.go
@@ -59,7 +59,7 @@ func (c *IndexAttrCache) GetIndexResourceUsage(indexInfo *querypb.FieldIndexInfo
 	}
 
 	engineVersion := indexInfo.GetCurrentIndexVersion()
-	isLoadWithDisk, has := c.loadWithDisk.Get(typeutil.NewPair[string, int32](indexType, engineVersion))
+	isLoadWithDisk, has := c.loadWithDisk.Get(typeutil.NewPair(indexType, engineVersion))
 	if !has {
 		isLoadWithDisk, _, _ = c.sf.Do(fmt.Sprintf("%s_%d", indexType, engineVersion), func() (bool, error) {
 			var result bool
@@ -67,10 +67,10 @@ func (c *IndexAttrCache) GetIndexResourceUsage(indexInfo *querypb.FieldIndexInfo
 				cIndexType := C.CString(indexType)
 				defer C.free(unsafe.Pointer(cIndexType))
 				cEngineVersion := C.int32_t(indexInfo.GetCurrentIndexVersion())
-				isLoadWithDisk = bool(C.IsLoadWithDisk(cIndexType, cEngineVersion))
+				result = bool(C.IsLoadWithDisk(cIndexType, cEngineVersion))
 				return nil, nil
 			}).Await()
-			c.loadWithDisk.Insert(typeutil.NewPair[string, int32](indexType, engineVersion), result)
+			c.loadWithDisk.Insert(typeutil.NewPair(indexType, engineVersion), result)
 			return result, nil
 		})
 	}