diff --git a/core/src/mindustry/client/ui/SchematicBrowserDialog.java b/core/src/mindustry/client/ui/SchematicBrowserDialog.java
index 3bb45d07ef..38d39ac90e 100644
--- a/core/src/mindustry/client/ui/SchematicBrowserDialog.java
+++ b/core/src/mindustry/client/ui/SchematicBrowserDialog.java
@@ -354,6 +354,15 @@ void tagsChanged(){
         Core.settings.putJson("schematic-tags", String.class, tags);
     }
 
+    public void pruneTags() {
+        tags.removeAll(t -> { // Remove tags not attached to any schematics
+            for (var ss: loadedRepositories.values()) {
+                if (ss.find(s -> s.labels.contains(t)) != null) return false;
+            }
+            return true;
+        });
+    }
+
     void showAllTags(){
         var dialog = new BaseDialog("@schematic.edittags");
         dialog.addCloseButton();
@@ -365,6 +374,7 @@ void showAllTags(){
                 p.table(t -> {
                     t.left().defaults().fillX().height(tagh).pad(2);
                     t.button("@client.schematic.cleartags", Icon.refresh, selectedTags::clear).wrapLabel(false).get().getLabelCell().padLeft(5);
+                    t.button("@client.schematic.prunetags", Icon.trash, this::pruneTags).wrapLabel(false).get().getLabelCell().padLeft(5);
                 });
                 p.row();