diff --git a/src/sdl/sdl_sound.c b/src/sdl/sdl_sound.c
index 25c21a07a..d3b51b15e 100644
--- a/src/sdl/sdl_sound.c
+++ b/src/sdl/sdl_sound.c
@@ -1480,7 +1480,7 @@ void I_StopFadingSong(void)
 {
 }
 
-boolean I_FadeSongFromVolume(UINT8 target_volume, UINT8 source_volume, UINT32 ms, void (*callback)(void));
+boolean I_FadeSongFromVolume(UINT8 target_volume, UINT8 source_volume, UINT32 ms, void (*callback)(void))
 {
 	(void)target_volume;
 	(void)source_volume;
@@ -1488,7 +1488,7 @@ boolean I_FadeSongFromVolume(UINT8 target_volume, UINT8 source_volume, UINT32 ms
 	return false;
 }
 
-boolean I_FadeSong(UINT8 target_volume, UINT32 ms, void (*callback)(void));
+boolean I_FadeSong(UINT8 target_volume, UINT32 ms, void (*callback)(void))
 {
 	(void)target_volume;
 	(void)ms;