--- generic/jkSoundFile.c 2005-12-14 12:29:38.000000000 +0100 +++ generic/jkSoundFile.c.new 2010-01-25 07:53:45.000000000 +0100 @@ -2371,7 +2371,7 @@ sprintf(&buf[12], "HEDR"); PutLELong(buf, 16, 32); Tcl_GlobalEvalObj(s->interp, Tcl_NewStringObj(CSL_DATECOMMAND, -1)); - sprintf(&buf[20], Tcl_GetStringResult(s->interp)); + sprintf(&buf[20], "%s", Tcl_GetStringResult(s->interp)); PutLELong(buf, 40, s->samprate); PutLELong(buf, 44, s->length);