diff --git a/src/account.ts b/src/account.ts
index a6df78e..18faa9f 100644
--- a/src/account.ts
+++ b/src/account.ts
@@ -52,7 +52,11 @@ export class Account {
    * @param accountNumber the given account number hex string
    */
   static isValidPair(signingKey: string, accountNumber: string) {
-    return new Account(signingKey).accountNumberHex === accountNumber;
+    try {
+      return new Account(signingKey).accountNumberHex === accountNumber;
+    } catch (_) {
+      return false;
+    }
   }
 
   /** The 32 byte account number as a 32 byte hex string. */
diff --git a/tests/account.test.js b/tests/account.test.js
index f47249c..7b87129 100644
--- a/tests/account.test.js
+++ b/tests/account.test.js
@@ -46,6 +46,15 @@ describe("Account", () => {
     expect(Account.isValidPair(defaultAccount.accountNumber, defaultAccount.signingKey)).toBeFalsy();
   });
 
+  it("isValidPair doesn't throw errors", () => {
+    const results = [
+      Account.isValidPair("asdf", "asdf"),
+      Account.isValidPair(defaultAccount.signingKey, "asdf"),
+      Account.isValidPair("asdf", defaultAccount.accountNumber),
+    ];
+    expect(results.every((val) => typeof val === "boolean")).toBeTruthy();
+  });
+
   it("createSignature(message)", () => {
     const account = createDefaultAccount();
     assertAccountBasics(account);