diff --git a/bigquery/client.py b/bigquery/client.py
index eedafc2..bb4d50a 100644
--- a/bigquery/client.py
+++ b/bigquery/client.py
@@ -227,7 +227,7 @@ def _submit_query_job(self, query_data):
         """ Submit a query job to BigQuery.
 
             This is similar to BigQueryClient.query, but gives the user
-            direct access to the query method on the offical BigQuery
+            direct access to the query method on the official BigQuery
             python client.
 
             For fine-grained control over a query job, see:
@@ -306,7 +306,7 @@ def _get_job_reference(self, job_id):
     def _insert_job(self, body_object):
         """ Submit a job to BigQuery
 
-            Direct proxy to the insert() method of the offical BigQuery
+            Direct proxy to the insert() method of the official BigQuery
             python client.
 
             Able to submit load, link, query, copy, or extract jobs.