diff --git a/provider/aws/formation/resource/efs.json.tmpl b/provider/aws/formation/resource/efs.json.tmpl
index 866ec7d68..64ed98116 100644
--- a/provider/aws/formation/resource/efs.json.tmpl
+++ b/provider/aws/formation/resource/efs.json.tmpl
@@ -199,7 +199,7 @@
           }
         ]
       }
-    },
+    }{{ if .ThirdAvailabilityZone }},{{ end }}
     {{ if .ThirdAvailabilityZone }}
     "MountTarget2": {
       "Type": "AWS::EFS::MountTarget",