diff --git a/packages/transactions/src/contract-abi.ts b/packages/transactions/src/contract-abi.ts
index 541b2c703..3bc014277 100644
--- a/packages/transactions/src/contract-abi.ts
+++ b/packages/transactions/src/contract-abi.ts
@@ -245,14 +245,8 @@ export interface ClarityAbiVariable {
 
 export interface ClarityAbiMap {
   name: string;
-  key: {
-    name: string;
-    type: ClarityAbiType;
-  }[];
-  value: {
-    name: string;
-    type: ClarityAbiType;
-  }[];
+  key: ClarityAbiType;
+  value: ClarityAbiType;
 }
 
 export interface ClarityAbiTypeFungibleToken {
diff --git a/packages/transactions/tests/abi/kv-store-abi.json b/packages/transactions/tests/abi/kv-store-abi.json
index 4a2858e5b..e80e20f9a 100644
--- a/packages/transactions/tests/abi/kv-store-abi.json
+++ b/packages/transactions/tests/abi/kv-store-abi.json
@@ -22,8 +22,8 @@
   "maps": [
     {
       "name": "store",
-      "key": [{ "name": "key", "type": { "buffer": { "length": 3 } } }],
-      "value": [{ "name": "value", "type": { "buffer": { "length": 3 } } }]
+      "key": { "buffer": { "length": 3 } },
+      "value": { "buffer": { "length": 3 } }
     }
   ],
   "fungible_tokens": [],