diff --git a/aegisub/src/dialog_automation.h b/aegisub/src/dialog_automation.h
index 7f6ec5d24..37e6a18d7 100644
--- a/aegisub/src/dialog_automation.h
+++ b/aegisub/src/dialog_automation.h
@@ -47,7 +47,7 @@
 
 
 /// DOCME
-namespace Automation4 { class ScriptManager; class Script; };
+namespace Automation4 { class ScriptManager; class Script; class AutoloadScriptManager; };
 
 
 /// DOCME