diff --git a/Flow.Launcher.Core/Plugin/PluginManager.cs b/Flow.Launcher.Core/Plugin/PluginManager.cs
index 444a44a0a..225529062 100644
--- a/Flow.Launcher.Core/Plugin/PluginManager.cs
+++ b/Flow.Launcher.Core/Plugin/PluginManager.cs
@@ -550,8 +550,12 @@ namespace Flow.Launcher.Core.Plugin
         private static bool SameOrLesserPluginVersionExists(string metadataPath)
         {
             var newMetadata = JsonSerializer.Deserialize<PluginMetadata>(File.ReadAllText(metadataPath));
+            if (!Version.TryParse(newMetadata.Version, out var newVersion))
+                throw new InvalidOperationException($"A plugin with the same ID and version already exists, or the version is greater than this downloaded plugin {plugin.Name}");
+
             return AllPlugins.Any(x => x.Metadata.ID == newMetadata.ID
-                          && newMetadata.Version.CompareTo(x.Metadata.Version) <= 0);
+                                       && Version.TryParse(x.Metadata.Version, out var version)
+                                       && newVersion <= version);
         }
 
         #region Public functions