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-rw-r--r--src/i_sdlmusic.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/i_sdlmusic.c b/src/i_sdlmusic.c
index 63a3467a..6acb528f 100644
--- a/src/i_sdlmusic.c
+++ b/src/i_sdlmusic.c
@@ -20,6 +20,8 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <ctype.h>
+
#include "SDL.h"
#include "SDL_mixer.h"