diff --git a/src/imgui/window/events.cpp b/src/imgui/window/events.cpp
index 3259610..fa5a760 100644
--- a/src/imgui/window/events.cpp
+++ b/src/imgui/window/events.cpp
@@ -50,7 +50,13 @@ namespace anm2ed::imgui
       auto behavior = [&]()
       {
         for (auto& id : unused)
+        {
+          for (auto& animation : anm2.animations.items)
+            for (auto& trigger : animation.triggers.frames)
+              if (trigger.eventID == id) trigger.eventID = -1;
+
           anm2.content.events.erase(id);
+        }
         unused.clear();
       };
 
diff --git a/workshop/metadata.xml b/workshop/metadata.xml
index 334ed25..fadfc93 100644
--- a/workshop/metadata.xml
+++ b/workshop/metadata.xml
@@ -51,6 +51,6 @@ Alternatively, if you have subscribed to the mod, you can find the latest releas
 [h3]Happy animating![/h3]
 [img]https://files.catbox.moe/4auc1c.gif[/img]
 </description>
-    <version>2.12</version>
+    <version>2.13</version>
     <visibility>Public</visibility>
 </metadata>