--- tcl_cmds.c 2009-01-07 10:49:03.000000000 +0100 +++ tcl_cmds.c.oden 2009-01-07 10:50:27.000000000 +0100 @@ -1756,7 +1756,7 @@ int cmd_ap_log_error(ClientData cd, Tcl_ Tcl_GetIntFromObj(interp, objv[1], &i); Tcl_GetIntFromObj(interp, objv[2], &j); - ap_log_error(APLOG_MARK, i, j, _r->server, Tcl_GetString(objv[3])); + ap_log_error(APLOG_MARK, i, j, _r->server, "%s", Tcl_GetString(objv[3])); return TCL_OK; }