diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e1c2490..666b54a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Address `SlackAPIRatelimitError` exceptions in `apps.slack.tasks.send_message_to_thread_if_bot_not_in_channel` task
   by @joeyorlando ([#3803](https://github.com/grafana/oncall/pull/3803))
+- Fix exception when parsing incident plugin config @mderynck ([#3802](https://github.com/grafana/oncall/pull/3802))
 
 ## v1.3.96 (2024-01-31)
 
diff --git a/engine/apps/user_management/sync.py b/engine/apps/user_management/sync.py
index fd8256e1..df0ce19b 100644
--- a/engine/apps/user_management/sync.py
+++ b/engine/apps/user_management/sync.py
@@ -111,9 +111,12 @@ def _sync_grafana_incident_plugin(organization: Organization, grafana_api_client
     It intended to use only inside _sync_organization. It mutates, but not saves org, it's saved in _sync_organization.
     """
     grafana_incident_settings, _ = grafana_api_client.get_grafana_incident_plugin_settings()
+    organization.is_grafana_incident_enabled = False
+    organization.grafana_incident_backend_url = None
+
     if grafana_incident_settings is not None:
         organization.is_grafana_incident_enabled = grafana_incident_settings["enabled"]
-        organization.grafana_incident_backend_url = grafana_incident_settings.get("jsonData", {}).get(
+        organization.grafana_incident_backend_url = (grafana_incident_settings.get("jsonData") or {}).get(
             GrafanaAPIClient.GRAFANA_INCIDENT_PLUGIN_BACKEND_URL_KEY
         )
 
diff --git a/engine/apps/user_management/tests/test_sync.py b/engine/apps/user_management/tests/test_sync.py
index 158f1378..96a86bae 100644
--- a/engine/apps/user_management/tests/test_sync.py
+++ b/engine/apps/user_management/tests/test_sync.py
@@ -541,6 +541,7 @@ class TestSyncGrafanaIncidentParams:
             MOCK_GRAFANA_INCIDENT_BACKEND_URL,
         ),
         TestSyncGrafanaIncidentParams(({"enabled": True}, None), True, None),
+        TestSyncGrafanaIncidentParams(({"enabled": True, "jsonData": None}, None), True, None),
         # missing jsonData (sometimes this is what we get back from the Grafana API)
         TestSyncGrafanaIncidentParams(({"enabled": False}, None), False, None),  # plugin is disabled for some reason
     ],