diff --git a/lnbits/core/models/audit.py b/lnbits/core/models/audit.py
index 263662a56..8e251a3b3 100644
--- a/lnbits/core/models/audit.py
+++ b/lnbits/core/models/audit.py
@@ -51,8 +51,8 @@ class AuditFilters(FilterModel):
 
 
 class AuditCountStat(BaseModel):
-    field: str
-    total: float
+    field: str = ""
+    total: float = 0
 
 
 class AuditStats(BaseModel):