diff --git a/tests/unit/test_exceptions.py b/tests/unit/test_exceptions.py
index 436f034..353ad44 100644
--- a/tests/unit/test_exceptions.py
+++ b/tests/unit/test_exceptions.py
@@ -2,7 +2,7 @@ from vdirsyncer import exceptions
 
 
 def test_user_error_problems():
-    e = exceptions.UserError('A few problems occured', problems=[
+    e = exceptions.UserError('A few problems occurred', problems=[
         'Problem one',
         'Problem two',
         'Problem three'
@@ -11,4 +11,4 @@ def test_user_error_problems():
     assert 'one' in str(e)
     assert 'two' in str(e)
     assert 'three' in str(e)
-    assert 'problems occured' in str(e)
+    assert 'problems occurred' in str(e)
diff --git a/vdirsyncer/cli/utils.py b/vdirsyncer/cli/utils.py
index a76f50e..765c411 100644
--- a/vdirsyncer/cli/utils.py
+++ b/vdirsyncer/cli/utils.py
@@ -144,9 +144,9 @@ def handle_cli_error(status_name=None, e=None):
         import traceback
         tb = traceback.format_tb(tb)
         if status_name:
-            msg = 'Unknown error occured for {}'.format(status_name)
+            msg = 'Unknown error occurred for {}'.format(status_name)
         else:
-            msg = 'Unknown error occured'
+            msg = 'Unknown error occurred'
 
         msg += ': {}\nUse `-vdebug` to see the full traceback.'.format(e)