diff --git a/aegisub/src/dialog_about.cpp b/aegisub/src/dialog_about.cpp
index 808effb78..16edb63d5 100644
--- a/aegisub/src/dialog_about.cpp
+++ b/aegisub/src/dialog_about.cpp
@@ -69,12 +69,6 @@ AboutScreen::AboutScreen(wxWindow *parent)
 #ifdef WITH_AUTO4_LUA
 	libString += _T("    Lua - Copyright (c) Lua.org, PUC-Rio;\n");
 #endif
-#ifdef WITH_PERL
-	libString += _T("    Perl - Copyright (c) Larry Wall et al;\n");
-#endif
-#ifdef WITH_RUBY
-	libString += _T("    Ruby - Copyright (c) Yukihiro Matsumoto et al;\n");
-#endif
 #ifdef WITH_HUNSPELL
 	libString += _T("    Hunspell - Copyright (c) Kevin Hendricks;\n");
 #endif
diff --git a/aegisub/src/plugin_manager.cpp b/aegisub/src/plugin_manager.cpp
index 9feac3ef7..eeba0d631 100644
--- a/aegisub/src/plugin_manager.cpp
+++ b/aegisub/src/plugin_manager.cpp
@@ -54,12 +54,6 @@ PluginManager::PluginManager() {
 #ifdef WITH_AUTO4_LUA
 	lua = NULL;
 #endif
-#ifdef WITH_PERL
-	perl = NULL;
-#endif
-#ifdef WITH_RUBY
-	ruby = NULL;
-#endif
 	
 }
 
@@ -80,20 +74,6 @@ PluginManager::~PluginManager() {
 		lua = NULL;
 	}
 #endif
-#ifdef WITH_PERL
-	if (perl) {
-		perl->Unregister(perl);
-		delete perl;
-		perl = NULL;
-	}
-#endif
-#ifdef WITH_RUBY
-	if (ruby) {
-		ruby->Unregister(ruby);
-		delete ruby;
-		ruby = NULL;
-	}
-#endif
 }
 
 
@@ -112,13 +92,6 @@ void PluginManager::RegisterBuiltInPlugins() {
 #ifdef WITH_AUTO4_LUA
 		lua = new Automation4::LuaScriptFactory();
 		lua->RegisterFactory();
-#endif
-#ifdef WITH_PERL
-		perl = new Automation4::PerlScriptFactory();
-		perl->RegisterFactory();
-#endif
-#ifdef WITH_RUBY
-		ruby = new Automation4::RubyScriptFactory();
 #endif
 	}
 
diff --git a/aegisub/src/plugin_manager.h b/aegisub/src/plugin_manager.h
index c7af3b352..68f821605 100644
--- a/aegisub/src/plugin_manager.h
+++ b/aegisub/src/plugin_manager.h
@@ -39,12 +39,6 @@
 #ifdef WITH_AUTO4_LUA
 #include "auto4_lua_factory.h"
 #endif
-#ifdef WITH_PERL
-#include "auto4_perl_factory.h"
-#endif
-#ifdef WITH_RUBY
-#include "auto4_ruby_factory.h"
-#endif
 
 
 ////////////////////////
@@ -56,12 +50,6 @@ private:
 #ifdef WITH_AUTO4_LUA
 	Automation4::LuaScriptFactory *lua;
 #endif
-#ifdef WITH_PERL
-	Automation4::PerlScriptFactory *perl;
-#endif
-#ifdef WITH_RUBY
-	Automation4::RubyScriptFactory *ruby;
-#endif
 
 public:
 	PluginManager();
diff --git a/aegisub/src/setup.cpp b/aegisub/src/setup.cpp
index e327fe8fa..0d4182036 100644
--- a/aegisub/src/setup.cpp
+++ b/aegisub/src/setup.cpp
@@ -150,14 +150,6 @@
 #endif
 
 
-////////
-// Ruby
-#ifdef WITH_RUBY
-#pragma comment(lib,"ws2_32.lib")
-#pragma comment(lib,"msvcrt-ruby18-static.lib")
-#endif
-
-
 /////////////
 // FreeType2
 #ifdef WITH_FREETYPE2
@@ -180,11 +172,4 @@
 #endif
 
 
-////////
-// Perl
-#ifdef WITH_PERL
-#pragma comment(lib,"perl510.lib")
-#endif
-
-
 #endif // VisualC