diff --git a/functions-common b/functions-common
index e44fea112d..a56a0abe9c 100644
--- a/functions-common
+++ b/functions-common
@@ -2063,14 +2063,14 @@ function is_service_enabled {
         # TODO(dtroyer): Remove these legacy special-cases after the is_XXX_enabled()
         #                are implemented
 
-        [[ ${service} == n-cell-* && ${ENABLED_SERVICES} =~ "n-cell" ]] && enabled=0
-        [[ ${service} == n-cpu-* && ${ENABLED_SERVICES} =~ "n-cpu" ]] && enabled=0
-        [[ ${service} == "nova" && ${ENABLED_SERVICES} =~ "n-" ]] && enabled=0
-        [[ ${service} == "glance" && ${ENABLED_SERVICES} =~ "g-" ]] && enabled=0
-        [[ ${service} == "neutron" && ${ENABLED_SERVICES} =~ "q-" ]] && enabled=0
-        [[ ${service} == "trove" && ${ENABLED_SERVICES} =~ "tr-" ]] && enabled=0
-        [[ ${service} == "swift" && ${ENABLED_SERVICES} =~ "s-" ]] && enabled=0
-        [[ ${service} == s-* && ${ENABLED_SERVICES} =~ "swift" ]] && enabled=0
+        [[ ${service} == n-cell-* && ,${ENABLED_SERVICES} =~ ,"n-cell" ]] && enabled=0
+        [[ ${service} == n-cpu-* && ,${ENABLED_SERVICES} =~ ,"n-cpu" ]] && enabled=0
+        [[ ${service} == "nova" && ,${ENABLED_SERVICES} =~ ,"n-" ]] && enabled=0
+        [[ ${service} == "glance" && ,${ENABLED_SERVICES} =~ ,"g-" ]] && enabled=0
+        [[ ${service} == "neutron" && ,${ENABLED_SERVICES} =~ ,"q-" ]] && enabled=0
+        [[ ${service} == "trove" && ,${ENABLED_SERVICES} =~ ,"tr-" ]] && enabled=0
+        [[ ${service} == "swift" && ,${ENABLED_SERVICES} =~ ,"s-" ]] && enabled=0
+        [[ ${service} == s-* && ,${ENABLED_SERVICES} =~ ,"swift" ]] && enabled=0
     done
 
     $xtrace