diff --git a/src/video/allegro_v.cpp b/src/video/allegro_v.cpp
--- a/src/video/allegro_v.cpp
+++ b/src/video/allegro_v.cpp
@@ -410,7 +410,7 @@ static void PollEvent()
  */
 int _allegro_instance_count = 0;
 
-const char *VideoDriver_Allegro::Start(const char * const *parm)
+const char *VideoDriver_Allegro::Start(const StringList &parm)
 {
 	if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, nullptr)) {
 		DEBUG(driver, 0, "allegro: install_allegro failed '%s'", allegro_error);