diff --git a/packages/xrpl/src/models/transactions/signerListSet.ts b/packages/xrpl/src/models/transactions/signerListSet.ts
index 3aaaccbd..3677d522 100644
--- a/packages/xrpl/src/models/transactions/signerListSet.ts
+++ b/packages/xrpl/src/models/transactions/signerListSet.ts
@@ -28,6 +28,8 @@ export interface SignerListSet extends BaseTransaction {
 
 const MAX_SIGNERS = 32
 
+const HEX_WALLET_LOCATOR_REGEX = /^[0-9A-Fa-f]{64}$/u
+
 /**
  * Verify the form and type of an SignerListSet at runtime.
  *
@@ -64,4 +66,18 @@ export function validateSignerListSet(tx: Record<string, unknown>): void {
       `SignerListSet: maximum of ${MAX_SIGNERS} members allowed in SignerEntries`,
     )
   }
+
+  if (tx.SignerEntries.length > 0) {
+    for (const entry of tx.SignerEntries) {
+      const signerEntry = entry.SignerEntry
+      if (
+        signerEntry.WalletLocator !== undefined &&
+        !HEX_WALLET_LOCATOR_REGEX.test(signerEntry.WalletLocator)
+      ) {
+        throw new ValidationError(
+          `SignerListSet: WalletLocator in SignerEntry must be a 256-bit (32-byte) hexadecimal value`,
+        )
+      }
+    }
+  }
 }
diff --git a/packages/xrpl/test/integration/transactions/signerListSet.ts b/packages/xrpl/test/integration/transactions/signerListSet.ts
index 97edd91a..2c66c0b0 100644
--- a/packages/xrpl/test/integration/transactions/signerListSet.ts
+++ b/packages/xrpl/test/integration/transactions/signerListSet.ts
@@ -36,29 +36,4 @@ describe('SignerListSet', function () {
     }
     await testTransaction(this.client, tx, this.wallet)
   })
-
-  it('sign with WalletLocator', async function () {
-    const tx: SignerListSet = {
-      TransactionType: 'SignerListSet',
-      Account: this.wallet.classicAddress,
-      SignerEntries: [
-        {
-          SignerEntry: {
-            Account: 'r5nx8ZkwEbFztnc8Qyi22DE9JYjRzNmvs',
-            SignerWeight: 1,
-            WalletLocator:
-              'CAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFE',
-          },
-        },
-        {
-          SignerEntry: {
-            Account: 'r3RtUvGw9nMoJ5FuHxuoVJvcENhKtuF9ud',
-            SignerWeight: 1,
-          },
-        },
-      ],
-      SignerQuorum: 2,
-    }
-    await testTransaction(this.client, tx, this.wallet)
-  })
 })
diff --git a/packages/xrpl/test/models/signerListSet.ts b/packages/xrpl/test/models/signerListSet.ts
index c4dcc739..ccbac3a3 100644
--- a/packages/xrpl/test/models/signerListSet.ts
+++ b/packages/xrpl/test/models/signerListSet.ts
@@ -150,4 +150,66 @@ describe('SignerListSet', function () {
       errorMessage,
     )
   })
+
+  it(`verifies valid WalletLocator in SignerEntries`, function () {
+    signerListSetTx.SignerQuorum = 3
+    signerListSetTx.SignerEntries = [
+      {
+        SignerEntry: {
+          Account: 'rBFBipte4nAQCTsRxd2czwvSurhCpAf4X6',
+          SignerWeight: 1,
+          WalletLocator:
+            'CAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFE',
+        },
+      },
+      {
+        SignerEntry: {
+          Account: 'r3ijUH32iiy9tYNj3rD7hKWYjy1BFUxngm',
+          SignerWeight: 1,
+        },
+      },
+      {
+        SignerEntry: {
+          Account: 'rpwq8vi4Mn3L5kDJmb8Mg59CanPFPzMCnj',
+          SignerWeight: 1,
+          WalletLocator:
+            '00000000000000000000000000000000000000000000000000000000DEADBEEF',
+        },
+      },
+    ]
+
+    assert.doesNotThrow(() => validateSignerListSet(signerListSetTx))
+    assert.doesNotThrow(() => validate(signerListSetTx))
+  })
+
+  it(`throws w/ invalid WalletLocator in SignerEntries`, function () {
+    signerListSetTx.SignerQuorum = 2
+    signerListSetTx.SignerEntries = [
+      {
+        SignerEntry: {
+          Account: 'rBFBipte4nAQCTsRxd2czwvSurhCpAf4X6',
+          SignerWeight: 1,
+          WalletLocator: 'not_valid',
+        },
+      },
+      {
+        SignerEntry: {
+          Account: 'r3ijUH32iiy9tYNj3rD7hKWYjy1BFUxngm',
+          SignerWeight: 1,
+        },
+      },
+    ]
+    const errorMessage =
+      'SignerListSet: WalletLocator in SignerEntry must be a 256-bit (32-byte) hexadecimal value'
+    assert.throws(
+      () => validateSignerListSet(signerListSetTx),
+      ValidationError,
+      errorMessage,
+    )
+    assert.throws(
+      () => validate(signerListSetTx),
+      ValidationError,
+      errorMessage,
+    )
+  })
 })