diff --git a/src/music/extmidi.cpp b/src/music/extmidi.cpp
--- a/src/music/extmidi.cpp
+++ b/src/music/extmidi.cpp
@@ -36,7 +36,7 @@
 /** Factory for the midi player that uses external players. */
 static FMusicDriver_ExtMidi iFMusicDriver_ExtMidi;
 
-const char *MusicDriver_ExtMidi::Start(const char * const * parm)
+const char *MusicDriver_ExtMidi::Start(const StringList &parm)
 {
 	if (strcmp(VideoDriver::GetInstance()->GetName(), "allegro") == 0 ||
 			strcmp(SoundDriver::GetInstance()->GetName(), "allegro") == 0) {