diff --git a/src/auto4_base.h b/src/auto4_base.h
index e7818d1d8..21a93932c 100644
--- a/src/auto4_base.h
+++ b/src/auto4_base.h
@@ -49,10 +49,8 @@
 
 #include <wx/dialog.h>
 
-class AssFile;
 class AssStyle;
 class DialogProgress;
-class SubtitleFormat;
 class wxWindow;
 class wxDialog;
 
@@ -181,8 +179,6 @@ namespace Automation4 {
 		virtual std::vector<cmd::Command*> GetMacros() const=0;
 		/// Get a list of export filters provided by this script
 		virtual std::vector<ExportFilter*> GetFilters() const=0;
-		/// Get a list of subtitle formats provided by this script
-		virtual std::vector<SubtitleFormat*> GetFormats() const=0;
 	};
 
 	/// A manager of loaded automation scripts
@@ -295,6 +291,5 @@ namespace Automation4 {
 
 		std::vector<cmd::Command*> GetMacros() const override { return {}; }
 		std::vector<ExportFilter*> GetFilters() const override { return {}; }
-		std::vector<SubtitleFormat*> GetFormats() const override { return {}; }
 	};
 }
diff --git a/src/auto4_lua.cpp b/src/auto4_lua.cpp
index a48bfd721..d7759c088 100644
--- a/src/auto4_lua.cpp
+++ b/src/auto4_lua.cpp
@@ -340,7 +340,6 @@ namespace Automation4 {
 
 		std::vector<cmd::Command*> GetMacros() const override { return macros; }
 		std::vector<ExportFilter*> GetFilters() const override;
-		std::vector<SubtitleFormat*> GetFormats() const override { return {}; }
 	};
 
 	LuaScript::LuaScript(agi::fs::path const& filename)
diff --git a/src/dialog_automation.cpp b/src/dialog_automation.cpp
index 6c7a9128d..a5488b563 100644
--- a/src/dialog_automation.cpp
+++ b/src/dialog_automation.cpp
@@ -254,9 +254,6 @@ void DialogAutomation::OnInfo(wxCommandEvent &)
 		boost::transform(ei->script->GetFilters(), append_info, [](const Automation4::ExportFilter* f) {
 			return wxString::Format(_("    Export filter: %s"), to_wx(f->GetName()));
 		});
-		boost::transform(ei->script->GetFormats(), append_info, [](const SubtitleFormat* f) {
-			return wxString::Format(_("    Subtitle format handler: %s"), to_wx(f->GetName()));
-		});
 	}
 
 	wxMessageBox(wxJoin(info, '\n', 0), _("Automation Script Info"));