diff --git a/Sources/Engine/Sound/ov_functions.h b/Sources/Engine/Sound/ov_functions.h
index 0188a83..703cefb 100644
--- a/Sources/Engine/Sound/ov_functions.h
+++ b/Sources/Engine/Sound/ov_functions.h
@@ -19,6 +19,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 DLLFUNCTION( OVF, int, ov_clear, (OggVorbis_File *vf), 4, 0)
 DLLFUNCTION( OVF, int, ov_open, (FILE *f, OggVorbis_File *vf, char *initial, long ibytes), 16,0);
 DLLFUNCTION( OVF, int, ov_open_callbacks, (void *datasource, OggVorbis_File *vf, char *initial, long ibytes, ov_callbacks callbacks), 32,0);
+#ifdef USE_TREMOR
+DLLFUNCTION( OVF, long, ov_read, (OggVorbis_File *vf,char *buffer,int length, int *bitstream), 16,0);
+#else
 DLLFUNCTION( OVF, long, ov_read, (OggVorbis_File *vf,char *buffer,int length, int bigendianp,int word,int sgned,int *bitstream), 28,0);
+#endif
 DLLFUNCTION( OVF, vorbis_info *, ov_info, (OggVorbis_File *vf,int link), 8,0);
-DLLFUNCTION( OVF, int, ov_time_seek, (OggVorbis_File *vf, double pos), 12,0);
\ No newline at end of file
+#ifdef USE_TREMOR
+DLLFUNCTION( OVF, int, ov_time_seek, (OggVorbis_File *vf, int64_t pos), 12,0);
+#else
+DLLFUNCTION( OVF, int, ov_time_seek, (OggVorbis_File *vf, double pos), 12,0);
+#endif
\ No newline at end of file