diff --git a/zerver/lib/actions.py b/zerver/lib/actions.py
index a4d3d2cbc9..76be4da5f1 100644
--- a/zerver/lib/actions.py
+++ b/zerver/lib/actions.py
@@ -2794,7 +2794,7 @@ def do_change_password(user_profile: UserProfile, password: str, commit: bool=Tr
         user_profile.save(update_fields=["password"])
     event_time = timezone_now()
     RealmAuditLog.objects.create(realm=user_profile.realm, acting_user=user_profile,
-                                 modified_user=user_profile, event_type='user_change_password',
+                                 modified_user=user_profile, event_type=RealmAuditLog.USER_CHANGE_PASSWORD,
                                  event_time=event_time)
 
 def do_change_full_name(user_profile: UserProfile, full_name: str,
diff --git a/zerver/models.py b/zerver/models.py
index 3577dd6803..27dcc6feef 100644
--- a/zerver/models.py
+++ b/zerver/models.py
@@ -1966,6 +1966,7 @@ class RealmAuditLog(models.Model):
     USER_ACTIVATED = 'user_activated'
     USER_DEACTIVATED = 'user_deactivated'
     USER_REACTIVATED = 'user_reactivated'
+    USER_CHANGE_PASSWORD = 'user_change_password'
 
     event_type = models.CharField(max_length=40)  # type: str
 
diff --git a/zerver/tests/test_audit_log.py b/zerver/tests/test_audit_log.py
index 6297376faf..fea7fd04a8 100644
--- a/zerver/tests/test_audit_log.py
+++ b/zerver/tests/test_audit_log.py
@@ -36,7 +36,7 @@ class TestRealmAuditLog(ZulipTestCase):
         user = self.example_user('hamlet')
         password = 'test1'
         do_change_password(user, password)
-        self.assertEqual(RealmAuditLog.objects.filter(event_type='user_change_password',
+        self.assertEqual(RealmAuditLog.objects.filter(event_type=RealmAuditLog.USER_CHANGE_PASSWORD,
                                                       event_time__gte=now).count(), 1)
         self.assertIsNone(validate_password(password, user))