diff --git a/test/unit/Axolotl.js b/test/unit/Axolotl.js
index 3dd0ae4..0c26a7b 100644
--- a/test/unit/Axolotl.js
+++ b/test/unit/Axolotl.js
@@ -225,7 +225,7 @@ describe("Axolotl", () => {
             aliceSession = {};
             bobSession = {};
 
-            crypto.validSiganture = true;
+            crypto.validSignature = true;
 
             aliceIdentityKeyPair = yield crypto.generateKeyPair();
             aliceSignedPreKeyPair = yield crypto.generateKeyPair();
@@ -372,7 +372,7 @@ describe("Axolotl", () => {
             yield assert.isRejected(decryptMessage(bobAxolotl, aliceSession, ciphertext), InvalidMessageException);
         }));
         it("rejects bad signedPreKey signature", co.wrap(function*() {
-            crypto.validSiganture = false;
+            crypto.validSignature = false;
             yield assert.isRejected(createEncryptedMessage(aliceAxolotl, bobSession), InvalidKeyException);
         }));
         it("rejects preKeyBundle if neither preKey nor signedPreKey are present", co.wrap(function*() {
diff --git a/test/unit/FakeCrypto.js b/test/unit/FakeCrypto.js
index ae7760e..e9f9031 100644
--- a/test/unit/FakeCrypto.js
+++ b/test/unit/FakeCrypto.js
@@ -50,10 +50,10 @@ var fakeCrypto = {
             resolve(new ArrayBuffer(32));
         });
     },
-    validSiganture: true,
+    validSignature: true,
     verifySignature: function() {
         return new Promise(function(resolve) {
-            resolve(fakeCrypto.validSiganture);
+            resolve(fakeCrypto.validSignature);
         });
     },
     hmac: function(key, data) {