diff --git a/src/routers/dashboard.py b/src/routers/dashboard.py
index 5147b7f..43aa3fe 100644
--- a/src/routers/dashboard.py
+++ b/src/routers/dashboard.py
@@ -101,15 +101,17 @@ async def projects_overview(
     to_date: date | None = Query(default=None, alias="to"),
     db: AsyncSession = Depends(get_db),
 ):
-    from_date, to_date = _date_range(from_date, to_date)
+    date_clauses = []
+    if from_date is not None or to_date is not None:
+        from_date, to_date = _date_range(from_date, to_date)
+        date_clauses = [DailyStat.date >= from_date, DailyStat.date <= to_date]
 
     result = await db.execute(
         select(DailyStat, Project)
         .join(Project, DailyStat.project_id == Project.id)
         .where(
             DailyStat.user_id == user.id,
-            DailyStat.date >= from_date,
-            DailyStat.date <= to_date,
+            *date_clauses,
         )
     )
     rows = result.all()