diff --git a/packages/apps/public/locales/en/app-contracts.json b/packages/apps/public/locales/en/app-contracts.json
index b232f962bb02..22cae02e515f 100644
--- a/packages/apps/public/locales/en/app-contracts.json
+++ b/packages/apps/public/locales/en/app-contracts.json
@@ -68,6 +68,10 @@
   "deployment constructor": "deployment constructor",
   "exec": "exec",
   "json for either ABI or .contract bundle": "json for either ABI or .contract bundle",
+  "max ProofSize allowed": "max ProofSize allowed",
+  "max ProofSize allowed ({{estimatedProofSize}} estimated)": "max ProofSize allowed ({{estimatedProofSize}} estimated)",
+  "max RefTime allowed (M)": "max RefTime allowed (M)",
+  "max RefTime allowed (M, {{estimatedRefTime}} estimated)": "max RefTime allowed (M, {{estimatedRefTime}} estimated)",
   "max gas allowed (M)": "max gas allowed (M)",
   "max gas allowed (M, {{estimatedMg}} estimated)": "max gas allowed (M, {{estimatedMg}} estimated)",
   "max read gas": "max read gas",
diff --git a/packages/page-contracts/src/Contracts/Call.tsx b/packages/page-contracts/src/Contracts/Call.tsx
index bef93a2b06f0..487a2e6d49e2 100644
--- a/packages/page-contracts/src/Contracts/Call.tsx
+++ b/packages/page-contracts/src/Contracts/Call.tsx
@@ -196,6 +196,13 @@ function Call ({ className = '', contract, messageIndex, onCallResult, onChangeM
         )}
         <InputMegaGas
           estimatedWeight={message.isMutating ? estimatedWeight : MAX_CALL_WEIGHT}
+          estimatedWeightV2={message.isMutating
+            ? estimatedWeightV2
+            : api.registry.createType('WeightV2', {
+              proofSize: new BN(1_000_000),
+              refTIme: MAX_CALL_WEIGHT
+            })
+          }
           help={t<string>('The maximum amount of gas to use for this contract call. If the call requires more, it will fail.')}
           isCall={!message.isMutating}
           weight={weight}