diff --git a/app/namespace.go b/app/namespace.go
index ab166715..ed4229c3 100644
--- a/app/namespace.go
+++ b/app/namespace.go
@@ -2157,6 +2157,7 @@ func NewNamespaceCommand(getNamespaceClientFn GetNamespaceClientFn) (CommandOut,
 			}
 
 			n.Spec.ConnectivityRuleIds = connectivityRuleIds
+			n.Spec.PassiveRegionIds = []*common.RegionID{}
 			return c.updateNamespace(ctx, n)
 		},
 	}
diff --git a/app/namespace_test.go b/app/namespace_test.go
index df72ed6d..b5ef6442 100644
--- a/app/namespace_test.go
+++ b/app/namespace_test.go
@@ -2843,6 +2843,7 @@ func (s *NamespaceTestSuite) TestSetConnectivityRules() {
 			},
 			expectUpdate: func(r *namespaceservice.UpdateNamespaceRequest) {
 				r.Spec.ConnectivityRuleIds = newRules
+				r.Spec.PassiveRegionIds = []*common.RegionID{}
 			},
 		},
 		{