diff --git a/tools/goctl/api/parser/g4/ast/apiparser.go b/tools/goctl/api/parser/g4/ast/apiparser.go
index b19ba666d22a..89aadb0d0133 100644
--- a/tools/goctl/api/parser/g4/ast/apiparser.go
+++ b/tools/goctl/api/parser/g4/ast/apiparser.go
@@ -253,7 +253,7 @@ func (p *Parser) duplicateRouteCheck(nestedApi *Api, mainHandlerMap, mainRouteMa
 				prefix = p.Text()
 			}
 			g := each.AtServer.Kv.Get(groupKey)
-			if p != nil {
+			if g != nil {
 				group = g.Text()
 			}
 		}