diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad89abb..656e431 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 To see unreleased changes, please see the [CHANGELOG on the master branch](https://github.com/gufolabs/gufo_acme/blob/master/CHANGELOG.md) guide.
 
+## [Unreleased]
+
+## Fixed
+
+* Fixed typo in exception class name.
+
 ## 0.1.1 - 2023-11-16
 
 ### Fixed
diff --git a/src/gufo/acme/client.py b/src/gufo/acme/client.py
index 27f775f..a216e04 100644
--- a/src/gufo/acme/client.py
+++ b/src/gufo/acme/client.py
@@ -50,7 +50,7 @@
     ACMECertificateError,
     ACMEConnectError,
     ACMEError,
-    ACMEFullfillmentFailed,
+    ACMEFulfillmentFailed,
     ACMENotRegistredError,
     ACMERateLimitError,
     ACMETimeoutError,
@@ -633,7 +633,7 @@ async def fulfill_http_01(
 
         Raises:
             ACMETimeoutError: On timeouts.
-            ACMEFullfillmentFailed: If the client failed to
+            ACMEFulfillmentFailed: If the client failed to
                 fulfill any challenge.
             ACMEError: and subclasses in case of other errors.
         """
@@ -653,7 +653,7 @@ async def fulfill_http_01(
                     fulfilled_challenge = ch
                     break
             else:
-                raise ACMEFullfillmentFailed
+                raise ACMEFulfillmentFailed
             # Wait for authorization became valid
             await self._wait_for(self.wait_for_authorization(auth), 60.0)
             # Clear challenge
@@ -916,7 +916,7 @@ async def fulfill_challenge(
             h = self.fulfill_tls_alpn_01
         else:
             return False
-        logger.warning("Trying to fullfill %s for %s", challenge.type, domain)
+        logger.warning("Trying to fulfill %s for %s", challenge.type, domain)
         r = await h(domain, challenge)
         if r:
             logger.warning(
diff --git a/tests/test_client.py b/tests/test_client.py
index 1abb028..c0bb3cf 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -22,7 +22,7 @@
     ACMEBadNonceError,
     ACMEConnectError,
     ACMEError,
-    ACMEFullfillmentFailed,
+    ACMEFulfillmentFailed,
     ACMENotRegistredError,
     ACMERateLimitError,
     ACMETimeoutError,
@@ -544,7 +544,7 @@ async def inner():
             uri = await client.new_account(EMAIL)
             assert uri
             # Create new order
-            with pytest.raises(ACMEFullfillmentFailed):
+            with pytest.raises(ACMEFulfillmentFailed):
                 await client.sign(domain, csr_pem)
             # Deactivate account
             await client.deactivate_account()