diff --git a/packages/react-params/src/Param/findComponent.ts b/packages/react-params/src/Param/findComponent.ts
index 11da49c8bc..4fba3fdd75 100644
--- a/packages/react-params/src/Param/findComponent.ts
+++ b/packages/react-params/src/Param/findComponent.ts
@@ -37,14 +37,14 @@ interface TypeToComponent {
 
 const components: ComponentMap = ([
   { c: Account, t: ['AccountId', 'AccountIdOf', 'Address', 'AuthorityId', 'SessionKey', 'ValidatorId'] },
-  { c: Amount, t: ['AccountIndex', 'AssetId', 'BlockNumber', 'Gas', 'Index', 'Nonce', 'ParaId', 'ProposalIndex', 'PropIndex', 'ReferendumIndex', 'u16', 'u32', 'u64', 'u128', 'u256', 'VoteIndex'] },
+  { c: Amount, t: ['AccountIndex', 'AssetId', 'BlockNumber', 'Gas', 'Index', 'Nonce', 'ParaId', 'ProposalIndex', 'PropIndex', 'ReferendumIndex', 'i8', 'i16', 'i32', 'i64', 'i128', 'u8', 'u16', 'u32', 'u64', 'u128', 'u256', 'VoteIndex'] },
   { c: Balance, t: ['Amount', 'AssetOf', 'Balance', 'BalanceOf'] },
   { c: Bool, t: ['bool'] },
   { c: Bytes, t: ['Bytes'] },
   { c: Code, t: ['Code'] },
   { c: Data, t: ['Data', 'Keys'] },
   { c: Enum, t: ['Enum'] },
-  { c: Hash, t: ['CodeHash', 'Hash', 'SeedOf', 'Signature'] },
+  { c: Hash, t: ['CodeHash', 'Hash', 'H256', 'H512', 'SeedOf', 'Signature'] },
   { c: KeyValue, t: ['KeyValue'] },
   { c: KeyValueArray, t: ['Vec<KeyValue>'] },
   { c: Moment, t: ['Moment', 'MomentOf'] },
diff --git a/packages/react-params/src/initValue.ts b/packages/react-params/src/initValue.ts
index 165789b959..8578f2f521 100644
--- a/packages/react-params/src/initValue.ts
+++ b/packages/react-params/src/initValue.ts
@@ -46,6 +46,13 @@ export default function getInitValue (def: TypeDef): RawParamValue | RawParamVal
     case 'PropIndex':
     case 'ProposalIndex':
     case 'ReferendumIndex':
+    case 'i8':
+    case 'i16':
+    case 'i32':
+    case 'i64':
+    case 'i128':
+    case 'u8':
+    case 'u16':
     case 'u32':
     case 'u64':
     case 'u128':
@@ -75,6 +82,12 @@ export default function getInitValue (def: TypeDef): RawParamValue | RawParamVal
     case 'Hash':
       return createType('Hash');
 
+    case 'H256':
+      return createType('H256');
+
+    case 'H512':
+      return createType('H512');
+
     case 'Data':
     case 'Keys':
       return '';