diff --git a/Penumbra/Models/Deduplicator.cs b/Penumbra/Models/Deduplicator.cs
index cfebd60b..2059a976 100644
--- a/Penumbra/Models/Deduplicator.cs
+++ b/Penumbra/Models/Deduplicator.cs
@@ -99,6 +99,7 @@ namespace Penumbra.Models
                         inOption = true;
                         foreach (var value in values)
                             option.AddFile(relName1, value);
+                        option.OptionFiles.Remove(relName2);
                     }
                 }
             }
diff --git a/Penumbra/Mods/ModManager.cs b/Penumbra/Mods/ModManager.cs
index 8705aef1..5a9ba0fb 100644
--- a/Penumbra/Mods/ModManager.cs
+++ b/Penumbra/Mods/ModManager.cs
@@ -179,7 +179,7 @@ namespace Penumbra.Mods
                                         }
                                     }
                                 }
-                                break;
+                                break;
                             case SelectType.Multi:
                                 for(var i = 0; i < group.Options.Count; ++i)
                                 {
diff --git a/Penumbra/Mods/ResourceMod.cs b/Penumbra/Mods/ResourceMod.cs
index a167ee51..3689fe40 100644
--- a/Penumbra/Mods/ResourceMod.cs
+++ b/Penumbra/Mods/ResourceMod.cs
@@ -22,7 +22,8 @@ namespace Penumbra.Mods
                 PluginLog.LogError( "no basepath has been set on {ResourceModName}", Meta.Name );
                 return;
             }
-
+
+            ModFiles.Clear();
             // we don't care about any _files_ in the root dir, but any folders should be a game folder/file combo
             foreach( var dir in ModBasePath.EnumerateDirectories() )
             {
diff --git a/Penumbra/UI/TabInstalledModPanel.cs b/Penumbra/UI/TabInstalledModPanel.cs
index 253274ab..da38d5c8 100644
--- a/Penumbra/UI/TabInstalledModPanel.cs
+++ b/Penumbra/UI/TabInstalledModPanel.cs
@@ -227,7 +227,9 @@ namespace Penumbra.UI
                 if( ImGui.Button( ButtonDeduplicate ) )
                 {
                     new Deduplicator(Mod.Mod.ModBasePath, Meta).Run();
-                    _selector.SaveCurrentMod();
+                    _selector.SaveCurrentMod();
+                    Mod.Mod.RefreshModFiles();
+                    _base._plugin.ModManager.CalculateEffectiveFileList();
                     _base._menu._effectiveTab.RebuildFileList(_base._plugin.Configuration.ShowAdvanced);
                 }
                 if( ImGui.IsItemHovered() )