diff --git a/noir/noir-repo/tooling/noir_js_types/src/types.ts b/noir/noir-repo/tooling/noir_js_types/src/types.ts
index dd6548ddb6c..d4e6a8e4269 100644
--- a/noir/noir-repo/tooling/noir_js_types/src/types.ts
+++ b/noir/noir-repo/tooling/noir_js_types/src/types.ts
@@ -39,7 +39,7 @@ export type WitnessMap = Map<number, string>;
 export type Abi = {
   parameters: AbiParameter[];
   return_type: { abi_type: AbiType; visibility: Visibility } | null;
-  error_types: Record<string, AbiErrorType>;
+  error_types: Partial<Record<string, AbiErrorType>>;
 };
 
 export interface VerifierBackend {
diff --git a/yarn-project/types/src/noir/index.ts b/yarn-project/types/src/noir/index.ts
index ca8d028bc22..57fefa79aee 100644
--- a/yarn-project/types/src/noir/index.ts
+++ b/yarn-project/types/src/noir/index.ts
@@ -40,7 +40,7 @@ export interface NoirFunctionAbi {
     visibility: ABIParameterVisibility;
   };
   /** Mapping of error selector => error type */
-  error_types: Record<string, AbiErrorType>;
+  error_types: Partial<Record<string, AbiErrorType>>;
 }
 
 /**