diff --git a/README.md b/README.md
index d3e16f8c9..3e2dc6eb8 100644
--- a/README.md
+++ b/README.md
@@ -95,7 +95,7 @@ cargo run --bin blockstack-cli generate-sk --testnet
 We will interact with the following simple contract `kv-store`. In our examples, we will assume this contract is saved to `./kv-store.clar`:
 
 ```scheme
-(define-map store (key (buff 32)) (value (buff 32)))
+(define-map store ((key (buff 32))) ((value (buff 32))))
 
 (define-public (get-value (key (buff 32)))
     (match (map-get? store {key key})