diff --git a/aegisub/src/auto4_lua.cpp b/aegisub/src/auto4_lua.cpp
index 3cff8d280..30f7e5376 100644
--- a/aegisub/src/auto4_lua.cpp
+++ b/aegisub/src/auto4_lua.cpp
@@ -722,28 +722,25 @@ namespace Automation4 {
 		return lua_error(L);
 	}
 
-	static void lua_threaded_call(ProgressSink *ps, lua_State *L, int nargs, int nresults, bool can_open_config, bool *failed)
-	{
-		LuaProgressSink lps(L, ps, can_open_config);
-
-		if (lua_pcall(L, nargs, nresults, 0)) {
-			if (!lua_isnil(L, -1)) {
-				// if the call failed, log the error here
-				ps->Log("\n\nLua reported a runtime error:\n");
-				ps->Log(lua_tostring(L, -1));
-			}
-			lua_pop(L, 1);
-			*failed = true;
-		}
-
-		lua_gc(L, LUA_GCCOLLECT, 0);
-	}
-
 	void LuaThreadedCall(lua_State *L, int nargs, int nresults, wxString const& title, wxWindow *parent, bool can_open_config)
 	{
 		bool failed = false;
 		BackgroundScriptRunner bsr(parent, title);
-		bsr.Run([&](ProgressSink *ps) { lua_threaded_call(ps, L, nargs, nresults, can_open_config, &failed); });
+		bsr.Run([&](ProgressSink *ps) {
+			LuaProgressSink lps(L, ps, can_open_config);
+
+			if (lua_pcall(L, nargs, nresults, 0)) {
+				if (!lua_isnil(L, -1)) {
+					// if the call failed, log the error here
+					ps->Log("\n\nLua reported a runtime error:\n");
+					ps->Log(lua_tostring(L, -1));
+				}
+				lua_pop(L, 1);
+				failed = true;
+			}
+
+			lua_gc(L, LUA_GCCOLLECT, 0);
+		});
 		if (failed)
 			throw agi::UserCancelException("Script threw an error");
 	}
diff --git a/aegisub/src/dialog_spellchecker.cpp b/aegisub/src/dialog_spellchecker.cpp
index 5cb6f20b6..af5ae0ce2 100644
--- a/aegisub/src/dialog_spellchecker.cpp
+++ b/aegisub/src/dialog_spellchecker.cpp
@@ -51,10 +51,6 @@
 #include <libaegisub/exception.h>
 #include <libaegisub/spellchecker.h>
 
-static void save_skip_comments(wxCommandEvent &evt) {
-	OPT_SET("Tool/Spell Checker/Skip Comments")->SetBool(!!evt.GetInt());
-}
-
 DialogSpellChecker::DialogSpellChecker(agi::Context *context)
 : wxDialog(context->parent, -1, _("Spell Checker"))
 , context(context)
@@ -129,7 +125,8 @@ DialogSpellChecker::DialogSpellChecker(agi::Context *context)
 		skip_comments = new wxCheckBox(this, -1, _("&Skip Comments"));
 		actions_sizer->Add(skip_comments, button_flags);
 		skip_comments->SetValue(OPT_GET("Tool/Spell Checker/Skip Comments")->GetBool());
-		skip_comments->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED, save_skip_comments);
+		skip_comments->Bind(wxEVT_COMMAND_CHECKBOX_CLICKED,
+			[](wxCommandEvent &evt) { OPT_SET("Tool/Spell Checker/Skip Comments")->SetBool(!!evt.GetInt()); });
 
 		wxButton *button;
 
diff --git a/aegisub/src/subtitles_provider_libass.cpp b/aegisub/src/subtitles_provider_libass.cpp
index 965ada76f..7c0852c49 100644
--- a/aegisub/src/subtitles_provider_libass.cpp
+++ b/aegisub/src/subtitles_provider_libass.cpp
@@ -114,21 +114,17 @@ public:
 	}
 };
 
-static void do_wait(agi::ProgressSink *ps, FontConfigCacheThread const * const * const cache_worker) {
-	ps->SetIndeterminate();
-	while (*cache_worker && !ps->IsCancelled())
-		wxMilliSleep(100);
-}
-
 static void wait_for_cache_thread(FontConfigCacheThread const * const * const cache_worker) {
 	if (!*cache_worker) return;
 
 	DialogProgress progress(wxGetApp().frame, "Updating font index", "This may take several minutes");
-	progress.Run(std::bind(do_wait, std::placeholders::_1, cache_worker));
+	progress.Run([=](agi::ProgressSink *ps) {
+		ps->SetIndeterminate();
+		while (*cache_worker && !ps->IsCancelled())
+			wxMilliSleep(100);
+	});
 }
 
-/// @brief Constructor
-///
 LibassSubtitlesProvider::LibassSubtitlesProvider(std::string) {
 	wait_for_cache_thread(&cache_worker);
 
diff --git a/aegisub/src/threaded_frame_source.cpp b/aegisub/src/threaded_frame_source.cpp
index 674cb4fb4..cce3fc9a5 100644
--- a/aegisub/src/threaded_frame_source.cpp
+++ b/aegisub/src/threaded_frame_source.cpp
@@ -61,13 +61,12 @@ struct invisible_line : public std::unary_function<AssEntry const&, bool> {
 	}
 };
 
-static void delete_frame(AegiVideoFrame *frame) {
-	frame->Clear();
-	delete frame;
-}
-
 std::shared_ptr<AegiVideoFrame> ThreadedFrameSource::ProcFrame(int frameNum, double time, bool raw) {
-	std::shared_ptr<AegiVideoFrame> frame(new AegiVideoFrame, delete_frame);
+	std::shared_ptr<AegiVideoFrame> frame(new AegiVideoFrame, [](AegiVideoFrame *frame) {
+		frame->Clear();
+		delete frame;
+	});
+
 	{
 		wxMutexLocker locker(providerMutex);
 		try {