diff --git a/Video.cc b/Video.cc
index d997bce..daadce7 100644
--- a/Video.cc
+++ b/Video.cc
@@ -14,7 +14,7 @@ static void Video_sound_callback(void * userdata, Uint8 * stream, int len)
     Sint16 * str = (Sint16 *) stream;
     for (int i = 0; i < len / 4; i++)
     {
-        str[i*2] = (Sint16) (32000.0 * sin(pos / 44100.0 * M_PI));
+        str[i*2] = (Sint16) (32000.0 * sin(pos * 263.0 / 44100.0 * 2.0 * M_PI));
         str[i*2+1] = 0;
         pos++;
     }