diff --git a/packages/contract-helpers/src/v3-UiPoolDataProvider-contract/index.ts b/packages/contract-helpers/src/v3-UiPoolDataProvider-contract/index.ts
index c1777d3e..3f87369e 100644
--- a/packages/contract-helpers/src/v3-UiPoolDataProvider-contract/index.ts
+++ b/packages/contract-helpers/src/v3-UiPoolDataProvider-contract/index.ts
@@ -262,12 +262,12 @@ export class UiPoolDataProvider implements UiPoolDataProviderInterface {
         collateralBitmap: eMode.eMode.collateralBitmap
           .toBigInt()
           .toString(2)
-          .padEnd(256, '0'),
+          .padStart(256, '0'),
         label: eMode.eMode.label,
         borrowableBitmap: eMode.eMode.borrowableBitmap
           .toBigInt()
           .toString(2)
-          .padEnd(256, '0'),
+          .padStart(256, '0'),
       },
     }));
   }
diff --git a/packages/math-utils/src/formatters/emode/index.ts b/packages/math-utils/src/formatters/emode/index.ts
index 62efb537..06addbd9 100644
--- a/packages/math-utils/src/formatters/emode/index.ts
+++ b/packages/math-utils/src/formatters/emode/index.ts
@@ -57,8 +57,11 @@ export function getReservesEModes(
   eModes: EModeData[],
 ): ReserveEMode[] {
   return eModes.reduce<ReserveEMode[]>((acc, eMode) => {
-    const borrowingEnabled = eMode.eMode.borrowableBitmap[reserveId] === '1';
-    const collateralEnabled = eMode.eMode.collateralBitmap[reserveId] === '1';
+    const { borrowableBitmap, collateralBitmap } = eMode.eMode;
+    const borrowingEnabled =
+      borrowableBitmap[borrowableBitmap.length - reserveId - 1] === '1';
+    const collateralEnabled =
+      collateralBitmap[collateralBitmap.length - reserveId - 1] === '1';
     if (borrowingEnabled || collateralEnabled) {
       acc.push({
         id: eMode.id,