diff --git a/aegisub/src/dialog_automation.h b/aegisub/src/dialog_automation.h
index d6dc00de1..c2b212dbe 100644
--- a/aegisub/src/dialog_automation.h
+++ b/aegisub/src/dialog_automation.h
@@ -48,7 +48,7 @@
 
 
 /// DOCME
-namespace Automation4 { class ScriptManager; class Script; };
+namespace Automation4 { class ScriptManager; class Script; class AutoloadScriptManager; };
 
 
 /// DOCME