diff --git a/util/install.sh b/util/install.sh
index 1ddaaf9..492c46c 100755
--- a/util/install.sh
+++ b/util/install.sh
@@ -156,11 +156,12 @@ function mn_deps {
     elif [ "$DIST" = "SUSE LINUX"  ]; then
 		$install gcc make socat psmisc xterm openssh iperf \
 			iproute telnet ${PYPKG}-setuptools libcgroup-tools \
-			ethtool help2man python-pyflakes python3-pylint python-pep8 ${PYPKG}-pexpect
+			ethtool help2man python-pyflakes python3-pylint \
+                        python-pep8 ${PYPKG}-pexpect ${PYPKG}-tk
     else  # Debian/Ubuntu
         $install gcc make socat psmisc xterm ssh iperf iproute2 telnet \
                  cgroup-bin ethtool help2man pyflakes pylint pep8 \
-                 ${PYPKG}-setuptools ${PYPKG}-pexpect
+                 ${PYPKG}-setuptools ${PYPKG}-pexpect ${PYPKG}-tk
     fi
 
     echo "Installing Mininet core"