diff --git a/exercise.sh b/exercise.sh
index 77d3a3b..cca9a13 100755
--- a/exercise.sh
+++ b/exercise.sh
@@ -165,7 +165,7 @@
 nova secgroup-delete-rule $SECGROUP icmp -1 -1 0.0.0.0/0
 
 # FIXME (anthony): make xs support security groups
-if [ "$VIRT_DRIVER" != "xenserver"]; then
+if [ "$VIRT_DRIVER" != "xenserver" ]; then
     # test we can aren't able to ping our floating ip within ASSOCIATE_TIMEOUT seconds
     if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ping -c1 -w1 $FLOATING_IP; do sleep 1; done"; then
         print "Security group failure - ping should not be allowed!"