diff --git a/apps/mobile/packages/features/staff/clock_in/lib/src/domain/validators/validators/time_window_validator.dart b/apps/mobile/packages/features/staff/clock_in/lib/src/domain/validators/validators/time_window_validator.dart
index 3710c228..5bc54d65 100644
--- a/apps/mobile/packages/features/staff/clock_in/lib/src/domain/validators/validators/time_window_validator.dart
+++ b/apps/mobile/packages/features/staff/clock_in/lib/src/domain/validators/validators/time_window_validator.dart
@@ -39,7 +39,7 @@ class TimeWindowValidator implements ClockInValidator {
       const Duration(minutes: _earlyWindowMinutes),
     );
 
-    if (windowStart.isBefore(DateTime.now())) {
+    if (windowStart.isAfter(DateTime.now())) {
       return const ClockInValidationResult.invalid('too_early_clock_in');
     }