diff --git a/tests/Meezi.API.Tests/DailyReportServiceTests.cs b/tests/Meezi.API.Tests/DailyReportServiceTests.cs
index 8c81553..2c164d0 100644
--- a/tests/Meezi.API.Tests/DailyReportServiceTests.cs
+++ b/tests/Meezi.API.Tests/DailyReportServiceTests.cs
@@ -196,8 +196,9 @@ public class DailyReportServiceTests
     public void ReportPlanGate_Free_AllowsEightDayWindow()
     {
         var today = new DateOnly(2026, 5, 21);
-        Assert.True(ReportPlanGate.IsDateInRange(PlanTier.Free, today, today));
-        Assert.True(ReportPlanGate.IsDateInRange(PlanTier.Free, today.AddDays(-7), today));
-        Assert.False(ReportPlanGate.IsDateInRange(PlanTier.Free, today.AddDays(-8), today));
+        const int freeMaxDays = 8; // Free plan's report-history window
+        Assert.True(ReportPlanGate.IsDateInRange(freeMaxDays, today, today));
+        Assert.True(ReportPlanGate.IsDateInRange(freeMaxDays, today.AddDays(-7), today));
+        Assert.False(ReportPlanGate.IsDateInRange(freeMaxDays, today.AddDays(-8), today));
     }
 }