diff --git a/internal/datacoord/server.go b/internal/datacoord/server.go
index 97a129ec31946..9eb87923f8976 100644
--- a/internal/datacoord/server.go
+++ b/internal/datacoord/server.go
@@ -276,13 +276,13 @@ func (s *Server) Register() error {
 			err := s.session.ProcessActiveStandBy(s.activateFunc)
 			if err != nil {
 				log.Error("failed to activate standby datacoord server", zap.Error(err))
-				return
+				panic(err)
 			}
 
 			err = s.icSession.ForceActiveStandby(nil)
 			if err != nil {
 				log.Error("failed to force activate standby indexcoord server", zap.Error(err))
-				return
+				panic(err)
 			}
 			afterRegister()
 		}()
diff --git a/internal/querycoordv2/server.go b/internal/querycoordv2/server.go
index da16b65fb4406..6ac6f9a6df932 100644
--- a/internal/querycoordv2/server.go
+++ b/internal/querycoordv2/server.go
@@ -160,7 +160,7 @@ func (s *Server) Register() error {
 		go func() {
 			if err := s.session.ProcessActiveStandBy(s.activateFunc); err != nil {
 				log.Error("failed to activate standby server", zap.Error(err))
-				return
+				panic(err)
 			}
 			afterRegister()
 		}()
diff --git a/internal/rootcoord/root_coord.go b/internal/rootcoord/root_coord.go
index 4e8fc35ee1700..2f40efa440ddf 100644
--- a/internal/rootcoord/root_coord.go
+++ b/internal/rootcoord/root_coord.go
@@ -280,7 +280,7 @@ func (c *Core) Register() error {
 		go func() {
 			if err := c.session.ProcessActiveStandBy(c.activateFunc); err != nil {
 				log.Warn("failed to activate standby rootcoord server", zap.Error(err))
-				return
+				panic(err)
 			}
 			afterRegister()
 		}()