diff --git a/apps/settings/serializers/settings.py b/apps/settings/serializers/settings.py
index 5d64d9e1a..208c86078 100644
--- a/apps/settings/serializers/settings.py
+++ b/apps/settings/serializers/settings.py
@@ -62,7 +62,7 @@ class TerminalSettingSerializer(serializers.Serializer):
     )
     TERMINAL_PASSWORD_AUTH = serializers.BooleanField(required=False)
     TERMINAL_PUBLIC_KEY_AUTH = serializers.BooleanField(required=False)
-    TERMINAL_HEARTBEAT_INTERVAL = serializers.IntegerField(min_value=5, max_value=99999, required=True)
+    TERMINAL_HEARTBEAT_INTERVAL = serializers.IntegerField(min_value=5, max_value=99999, required=False)
     TERMINAL_ASSET_LIST_SORT_BY = serializers.ChoiceField(SORT_BY_CHOICES, required=False)
     TERMINAL_ASSET_LIST_PAGE_SIZE = serializers.ChoiceField(PAGE_SIZE_CHOICES, required=False)
     TERMINAL_SESSION_KEEP_DURATION = serializers.IntegerField(min_value=1, max_value=99999, required=True)