diff --git a/slave_scripts/devstack-vm-gate-host.sh b/slave_scripts/devstack-vm-gate-host.sh
index 7cc9ed2a..72fad076 100755
--- a/slave_scripts/devstack-vm-gate-host.sh
+++ b/slave_scripts/devstack-vm-gate-host.sh
@@ -20,6 +20,11 @@
 # limitations under the License.
 
 set -o errexit
+
+# Remove any crontabs left over from the image
+sudo crontab -u root -r || /bin/true
+sudo crontab -u jenkins -r || /bin/true
+
 cd workspace
 
 DEST=/opt/stack