diff --git a/src/metrics/chainflip/gaugeFeeDeficit.ts b/src/metrics/chainflip/gaugeFeeDeficit.ts
index 80fe71e..8741d32 100644
--- a/src/metrics/chainflip/gaugeFeeDeficit.ts
+++ b/src/metrics/chainflip/gaugeFeeDeficit.ts
@@ -30,14 +30,12 @@ export const gaugeFeeDeficit = async (context: Context): Promise<void> => {
 
         // ARB fees balance
         const feeWitheldArb = Number(
-            (await api.query.arbitrumIngressEgress.withheldTransactionFees('ArbEth'))
-                .toHuman()
-                .replace(/,/g, ''),
+            (await api.query.arbitrumIngressEgress.withheldTransactionFees('ArbEth')).toJSON(),
         );
         const feeSpentArb = await api.query.arbitrumBroadcaster.transactionFeeDeficit.entries();
         totalSpent = 0;
         feeSpentArb.forEach(([key, element]: [any, any]) => {
-            totalSpent += Number(element.toHuman().replace(/,/g, ''));
+            totalSpent += Number(element.toJSON());
         });
         const deficitArb = (feeWitheldArb - totalSpent) / 1e18;
         metric.labels('arbitrum').set(deficitArb);
diff --git a/src/metrics/chainflip/guageExternalChainsBlockHeight.ts b/src/metrics/chainflip/guageExternalChainsBlockHeight.ts
index 63c47b3..237d389 100644
--- a/src/metrics/chainflip/guageExternalChainsBlockHeight.ts
+++ b/src/metrics/chainflip/guageExternalChainsBlockHeight.ts
@@ -40,9 +40,7 @@ export const gaugeExternalChainsBlockHeight = async (context: Context) => {
 
         // Arbitrum
         const arbBlockHeight = Number(
-            (await api.query.arbitrumChainTracking.currentChainState())
-                .toHuman()
-                .blockHeight.replace(/,/g, ''),
+            (await api.query.arbitrumChainTracking.currentChainState()).toJSON().blockHeight,
         );
         global.arbHeight = arbBlockHeight;
         metric.labels('arbitrum').set(arbBlockHeight);