diff --git a/packages/@aws-cdk/aws-efs/lib/efs-file-system.ts b/packages/@aws-cdk/aws-efs/lib/efs-file-system.ts
index b032fd34ce133..c6332647bcba0 100644
--- a/packages/@aws-cdk/aws-efs/lib/efs-file-system.ts
+++ b/packages/@aws-cdk/aws-efs/lib/efs-file-system.ts
@@ -290,9 +290,7 @@ export class EfsFileSystem extends EfsFileSystemBase {
         });
       this.mountTargets.push(efsMountTarget);
       this.mountTargetIdentifiers.push(efsMountTarget.ref);
-      if (efsMountTarget.ipAddress !== undefined) {
-        this.mountTargetIpAddress.push(efsMountTarget.ipAddress);
-      }
+      this.mountTargetIpAddress.push(efsMountTarget.attrIpAddress);
     });
   }
 }
\ No newline at end of file