Index: streams/wvmodem.cc
===================================================================
--- streams/wvmodem.cc.orig
+++ streams/wvmodem.cc
@@ -207,7 +207,7 @@ void WvModem::setup_modem(bool rtscts)
 	sinfo.closing_wait = ASYNC_CLOSING_WAIT_NONE;
 	sinfo.closing_wait2 = ASYNC_CLOSING_WAIT_NONE;
 
-	if (ioctl(getrfd(), TIOCSSERIAL, &sinfo) < 0)
+        if (ioctl(getrfd(), TIOCSSERIAL, &sinfo) < 0 && getuid() == 0)
 	    log("Cannot set information for serial port.");
     }
 #endif