diff --git a/src/sound.c b/src/sound.c
index e048ed0..7ee956b 100644
--- a/src/sound.c
+++ b/src/sound.c
@@ -164,7 +164,7 @@ static int sound_makeList(void) {
 			sound_list = realloc(sound_list, ++nsound_list * sizeof(alSound));
 
 			// Remove the prefix and suffix.
-			len = strlen(files[i]) - strlen(SOUND_SUFFIX SOUND_SUFFIX);
+			len = strlen(files[i]) - strlen(SOUND_SUFFIX SOUND_PREFIX);
 			strncpy(tmp, files[i] + strlen(SOUND_PREFIX), len);
 			tmp[len] = '\0';