diff --git a/src/pytz/tests/test_tzinfo.py b/src/pytz/tests/test_tzinfo.py
index 7d6d7887..16018fab 100644
--- a/src/pytz/tests/test_tzinfo.py
+++ b/src/pytz/tests/test_tzinfo.py
@@ -539,7 +539,7 @@ class NoumeaDSTEndTestCase(USEasternDSTStartTestCase):
 
 
 class NoumeaNoMoreDSTTestCase(NoumeaDSTEndTestCase):
-    # Noumea dropped DST in 1997. Here we test that it stops occuring.
+    # Noumea dropped DST in 1997. Here we test that it stops occurring.
     transition_time = (
         NoumeaDSTEndTestCase.transition_time + timedelta(days=365 * 10))
     before = NoumeaDSTEndTestCase.after
diff --git a/src/pytz/tzinfo.py b/src/pytz/tzinfo.py
index 725978d5..89a50afd 100644
--- a/src/pytz/tzinfo.py
+++ b/src/pytz/tzinfo.py
@@ -355,7 +355,7 @@ def localize(self, dt, is_dst=False):
                     is_dst=False) + timedelta(hours=6)
 
         # If we get this far, we have multiple possible timezones - this
-        # is an ambiguous case occuring during the end-of-DST transition.
+        # is an ambiguous case occurring during the end-of-DST transition.
 
         # If told to be strict, raise an exception since we have an
         # ambiguous case