diff --git a/scripts/runqemu b/scripts/runqemu
index 3f187ca793..6a3fbb2d6f 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -1186,7 +1186,7 @@ to your build configuration.
             gid = os.getgid()
             uid = os.getuid()
             logger.info("Setting up tap interface under sudo")
-            cmd = ('sudo', self.qemuifup, str(uid), str(gid))
+            cmd = ('sudo', self.qemuifup, str(gid))
             try:
                 tap = subprocess.check_output(cmd).decode('utf-8').strip()
             except subprocess.CalledProcessError as e:
diff --git a/scripts/runqemu-ifup b/scripts/runqemu-ifup
index c65ceaf1c8..05c9325b6b 100755
--- a/scripts/runqemu-ifup
+++ b/scripts/runqemu-ifup
@@ -30,7 +30,7 @@ if [ $EUID -ne 0 ]; then
 fi
 
 if [ $# -eq 2 ]; then
-	echo "Warning: uid parameter is ignored. It is no longer needed."
+	echo "Warning: uid parameter is ignored. It is no longer needed." >&2
 	GROUP="$2"
 elif [ $# -eq 1 ]; then
 	GROUP="$1"