diff --git a/include/ladspa_base.h b/include/ladspa_base.h
index d290f7baf..ef8c98706 100644
--- a/include/ladspa_base.h
+++ b/include/ladspa_base.h
@@ -75,7 +75,9 @@ inline plugin::descriptor::subPluginFeatures::key ladspaKeyToSubPluginKey(
 						const ladspa_key_t & _key )
 {
 	plugin::descriptor::subPluginFeatures::key::attributeMap m;
-	m["file"] = _key.first;
+	QString file = _key.first;
+	m["file"] = file.remove( QRegExp( "\\.so$" ) ).
+				remove( QRegExp( "\\.dll$" ) );
 	m["plugin"] = _key.second;
 	return( plugin::descriptor::subPluginFeatures::key( _desc, _name,
 									m ) );
diff --git a/plugins/ladspa_effect/ladspa_subplugin_features.cpp b/plugins/ladspa_effect/ladspa_subplugin_features.cpp
index 873ef2da6..af107098a 100644
--- a/plugins/ladspa_effect/ladspa_subplugin_features.cpp
+++ b/plugins/ladspa_effect/ladspa_subplugin_features.cpp
@@ -162,7 +162,14 @@ void ladspaSubPluginFeatures::listSubPluginKeys( plugin::descriptor * _desc,
 ladspa_key_t ladspaSubPluginFeatures::subPluginKeyToLadspaKey(
 							const key * _key )
 {
-	return( ladspa_key_t( _key->attributes["file"],
-						_key->attributes["plugin"] ) );
+	QString file = _key->attributes["file"].toLower();
+	return( ladspa_key_t( file.remove( QRegExp( "\\.so$" ) ).
+				remove( QRegExp( "\\.dll$" ) ) +
+#ifdef LMMS_BUILD_WIN32
+						".dll"
+#else
+						".so"
+#endif
+					, _key->attributes["plugin"] ) );
 }