diff --git a/Lib/unittest/loader.py b/Lib/unittest/loader.py
index b254c80..eb447d7 100644
--- a/Lib/unittest/loader.py
+++ b/Lib/unittest/loader.py
@@ -387,7 +387,7 @@
             if tests is not None:
                 yield tests
             if not should_recurse:
-                # Either an error occured, or load_tests was used by the
+                # Either an error occurred, or load_tests was used by the
                 # package.
                 return
         # Handle the contents.
diff --git a/Lib/unittest/result.py b/Lib/unittest/result.py
index a18f11b..c7e3206 100644
--- a/Lib/unittest/result.py
+++ b/Lib/unittest/result.py
@@ -148,7 +148,7 @@
         self.skipped.append((test, reason))
 
     def addExpectedFailure(self, test, err):
-        """Called when an expected failure/error occured."""
+        """Called when an expected failure/error occurred."""
         self.expectedFailures.append(
             (test, self._exc_info_to_string(err, test)))