diff --git a/Wox.Core/Plugin/PluginManager.cs b/Wox.Core/Plugin/PluginManager.cs
index 7ff406b710..db05467dd6 100644
--- a/Wox.Core/Plugin/PluginManager.cs
+++ b/Wox.Core/Plugin/PluginManager.cs
@@ -257,6 +257,8 @@ namespace Wox.Core.Plugin
                 string msg = InternationalizationManager.Instance.GetTranslation("newActionKeywordsCannotBeEmpty");
                 throw new WoxPluginException(plugin.Metadata.Name, msg);
             }
+            // do nothing if they are same
+            if (oldActionKeyword == newActionKeyword) return;
             if (NonGlobalPlugins.ContainsKey(newActionKeyword))
             {
                 string msg = InternationalizationManager.Instance.GetTranslation("newActionKeywordsHasBeenAssigned");