diff --git a/packages/xrpl/src/models/transactions/AMMDeposit.ts b/packages/xrpl/src/models/transactions/AMMDeposit.ts
index 0b62664a..66616d08 100644
--- a/packages/xrpl/src/models/transactions/AMMDeposit.ts
+++ b/packages/xrpl/src/models/transactions/AMMDeposit.ts
@@ -93,7 +93,7 @@ export function validateAMMDeposit(tx: Record<string, unknown>): void {
     throw new ValidationError('AMMDeposit: Asset2In must be an Amount')
   }
 
-  if (tx.EPrice != null && typeof !isAmount(tx.EPrice)) {
+  if (tx.EPrice != null && !isAmount(tx.EPrice)) {
     throw new ValidationError('AMMDeposit: EPrice must be an Amount')
   }
 }
diff --git a/packages/xrpl/src/models/transactions/AMMWithdraw.ts b/packages/xrpl/src/models/transactions/AMMWithdraw.ts
index 8fdf059d..ae997466 100644
--- a/packages/xrpl/src/models/transactions/AMMWithdraw.ts
+++ b/packages/xrpl/src/models/transactions/AMMWithdraw.ts
@@ -95,7 +95,7 @@ export function validateAMMWithdraw(tx: Record<string, unknown>): void {
     throw new ValidationError('AMMWithdraw: Asset2Out must be an Amount')
   }
 
-  if (tx.EPrice != null && typeof !isAmount(tx.EPrice)) {
+  if (tx.EPrice != null && !isAmount(tx.EPrice)) {
     throw new ValidationError('AMMWithdraw: EPrice must be an Amount')
   }
 }