diff --git a/examples/cluster.py b/examples/cluster.py
index 642e0d2..4a34b7b 100755
--- a/examples/cluster.py
+++ b/examples/cluster.py
@@ -510,7 +510,7 @@ class RemoteGRELink( RemoteLink ):
                                node1, node2, deleteIntfs=deleteIntfs )
             # Need to reduce the MTU of all emulated hosts to 1450 for GRE
             # tunneling, otherwise packets larger than 1400 bytes cannot be
-            # successfully transmitted through the turnnel.
+            # successfully transmitted through the tunnel.
             node1.cmd('ip link set dev %s mtu 1450' % intfname1)
             node2.cmd('ip link set dev %s mtu 1450' % intfname2)
         else: