diff --git a/contracts/NonFungibleToken.cdc b/contracts/NonFungibleToken.cdc
index 0ead604..b99b13b 100644
--- a/contracts/NonFungibleToken.cdc
+++ b/contracts/NonFungibleToken.cdc
@@ -225,7 +225,7 @@ access(all) contract interface NonFungibleToken: ViewResolver {
         access(all) view fun borrowNFT(_ id: UInt64): &{NonFungibleToken.NFT}? {
             post {
                 (result == nil) || (result?.id == id): 
-            "Cannot borrow NFT reference: The ID of the returned reference does not match the ID that was specified"
+                    "Cannot borrow NFT reference: The ID of the returned reference does not match the ID that was specified"
             }
         }