Fix quoting error

Change-Id: Ic343a611a6756623f5b1842fd4919c69172083cc
diff --git a/Jenkinsfile b/Jenkinsfile
index 3ee98d0..9d38b4f 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -5,7 +5,7 @@
         stage('build') {
             steps {
                 sh '''#!/bin/bash -l
-                . tools/build/envDefaults && onos-buck build onos'
+                . tools/build/envDefaults && onos-buck build onos
                 '''
             }
         }