diff --git a/packages/sdk/src/core/account.service.ts b/packages/sdk/src/core/account.service.ts
index ecd9f2c..d053c77 100644
--- a/packages/sdk/src/core/account.service.ts
+++ b/packages/sdk/src/core/account.service.ts
@@ -489,7 +489,9 @@ export class AccountService {
         // Create a map of deposits by precommitment for efficient lookup
         const depositMap = new Map<Hash, DepositEvent>();
         for (const deposit of deposits) {
-          depositMap.set(deposit.precommitment, deposit);
+          if (!depositMap.has(deposit.precommitment)) {
+            depositMap.set(deposit.precommitment, deposit);
+          }
         }
 
         // Track found deposits for logging and debugging
diff --git a/packages/sdk/src/core/data.service.ts b/packages/sdk/src/core/data.service.ts
index 7c6cf66..17606d5 100644
--- a/packages/sdk/src/core/data.service.ts
+++ b/packages/sdk/src/core/data.service.ts
@@ -105,7 +105,7 @@ export class DataService {
             _merkleRoot: precommitment,
           } = log.args;
 
-          if (!depositor || !commitment || !label || !value || !precommitment || !log.blockNumber || !log.transactionHash) {
+          if (!depositor || !commitment || !label || !precommitment || !log.blockNumber || !log.transactionHash) {
             throw DataError.invalidLog("deposit", "missing required fields");
           }
 
@@ -113,7 +113,7 @@ export class DataService {
             depositor: depositor.toLowerCase(),
             commitment: commitment as Hash,
             label: label as Hash,
-            value,
+            value: value || BigInt(0),
             precommitment: precommitment as Hash,
             blockNumber: BigInt(log.blockNumber),
             transactionHash: log.transactionHash,