diff --git a/.changeset/wild-files-whisper.md b/.changeset/wild-files-whisper.md
new file mode 100644
index 00000000..a2ee9a49
--- /dev/null
+++ b/.changeset/wild-files-whisper.md
@@ -0,0 +1,5 @@
+---
+"permissionless": patch
+---
+
+Fixed when slot overrides returned from pimlico_getTokenQuotes are zero
diff --git a/packages/permissionless-test/mock-aa-infra/mock-paymaster/relay.ts b/packages/permissionless-test/mock-aa-infra/mock-paymaster/relay.ts
index 2d7c55ce..cfbd64b6 100644
--- a/packages/permissionless-test/mock-aa-infra/mock-paymaster/relay.ts
+++ b/packages/permissionless-test/mock-aa-infra/mock-paymaster/relay.ts
@@ -333,11 +333,15 @@ const handleMethod = async (
             [getAddress("0xffffffffffffffffffffffffffffffffffffffff")]: {
                 exchangeRateNativeToUsd: "0x1a2b3c4d5e6f7890abcdef",
                 exchangeRate: "0x3a7b9c8d6e5f4321",
+                balanceSlot: "0x0",
+                allowanceSlot: "0x1",
                 postOpGas: "0x1a2b3c"
             },
             [ERC20_ADDRESS]: {
                 exchangeRateNativeToUsd: "0x5cc717fbb3450c0000000",
                 exchangeRate: "0x5cc717fbb3450c0000",
+                balanceSlot: "0x5",
+                allowanceSlot: "0x0",
                 postOpGas: "0xc350"
             }
         }
diff --git a/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.test.ts b/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.test.ts
index 54bfc051..6583b108 100644
--- a/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.test.ts
+++ b/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.test.ts
@@ -193,7 +193,7 @@ describe.each(getCoreSmartAccounts())(
         )
 
         testWithRpc.skipIf(!supportsEntryPointV07)(
-            "prepareUserOperationForErc20Paymaster_v07",
+            "prepareUserOperationForErc20Paymaster_v07 (balanceOverride enabled)",
             async ({ rpc }) => {
                 const { anvilRpc } = rpc
 
diff --git a/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.ts b/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.ts
index 60c304c0..2d153ff9 100644
--- a/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.ts
+++ b/packages/permissionless/experimental/pimlico/utils/prepareUserOperationForErc20Paymaster.ts
@@ -145,7 +145,8 @@ export const prepareUserOperationForErc20Paymaster =
             const allowanceSlot = _allowanceSlot ?? quotes[0].allowanceSlot
             const balanceSlot = _balanceSlot ?? quotes[0].balanceSlot
 
-            const hasSlot = allowanceSlot && balanceSlot
+            const hasSlot =
+                allowanceSlot !== undefined && balanceSlot !== undefined
 
             if (!hasSlot && balanceOverride) {
                 throw new Error(
diff --git a/packages/permissionless/utils/erc20AllowanceOverride.test.ts b/packages/permissionless/utils/erc20AllowanceOverride.test.ts
index a1bdc7eb..d5343bf9 100644
--- a/packages/permissionless/utils/erc20AllowanceOverride.test.ts
+++ b/packages/permissionless/utils/erc20AllowanceOverride.test.ts
@@ -8,9 +8,9 @@ import {
 describe("erc20AllowanceOverride", () => {
     test("should return the correct structure for valid inputs", () => {
         const params = {
-            token: "0xTokenAddress",
-            owner: "0xOwnerAddress",
-            spender: "0xSpenderAddress",
+            token: "0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF",
+            owner: "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE",
+            spender: "0xDDdDddDdDdddDDddDDddDDDDdDdDDdDDdDDDDDDd",
             slot: BigInt(1),
             amount: BigInt(100)
         } as const
@@ -32,9 +32,9 @@ describe("erc20AllowanceOverride", () => {
 
     test("should use the default amount when none is provided", () => {
         const params: Erc20AllowanceOverrideParameters = {
-            token: "0xTokenAddress",
-            owner: "0xOwnerAddress",
-            spender: "0xSpenderAddress",
+            token: "0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF",
+            owner: "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE",
+            spender: "0xDDdDddDdDdddDDddDDddDDDDdDdDDdDDdDDDDDDd",
             slot: BigInt(1)
         }
 
diff --git a/packages/permissionless/utils/erc20BalanceOverride.test.ts b/packages/permissionless/utils/erc20BalanceOverride.test.ts
index 2262b5c4..c486de91 100644
--- a/packages/permissionless/utils/erc20BalanceOverride.test.ts
+++ b/packages/permissionless/utils/erc20BalanceOverride.test.ts
@@ -8,8 +8,8 @@ import {
 describe("erc20BalanceOverride", () => {
     test("should return the correct structure for valid inputs", () => {
         const params = {
-            token: "0xTokenAddress",
-            owner: "0xOwnerAddress",
+            token: "0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF",
+            owner: "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE",
             slot: BigInt(1),
             balance: BigInt(1000)
         } as const
@@ -31,8 +31,8 @@ describe("erc20BalanceOverride", () => {
 
     test("should use the default balance when none is provided", () => {
         const params: Erc20BalanceOverrideParameters = {
-            token: "0xTokenAddress",
-            owner: "0xOwnerAddress",
+            token: "0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF",
+            owner: "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE",
             slot: BigInt(1)
         }