diff --git a/pkg/ingress/config/ingress_config.go b/pkg/ingress/config/ingress_config.go
index 602557e1f..1864fe09b 100644
--- a/pkg/ingress/config/ingress_config.go
+++ b/pkg/ingress/config/ingress_config.go
@@ -798,7 +798,9 @@ func (m *IngressConfig) convertIstioWasmPlugin(obj *higressext.WasmPlugin) (*ext
 		PluginConfig:    obj.PluginConfig,
 		PluginName:      obj.PluginName,
 		Phase:           extensions.PluginPhase(obj.Phase),
-		Priority:        &types.Int64Value{Value: int64(obj.GetPriority().Value)},
+	}
+	if obj.GetPriority() != nil {
+		result.Priority = &types.Int64Value{Value: int64(obj.GetPriority().Value)}
 	}
 	if result.PluginConfig != nil {
 		return result, nil