diff --git a/app/models/finished_timer_session_validator.rb b/app/models/finished_timer_session_validator.rb
index b69f8b5..3095ab4 100644
--- a/app/models/finished_timer_session_validator.rb
+++ b/app/models/finished_timer_session_validator.rb
@@ -41,16 +41,16 @@ def validate_minimal_duration
   end
 
   def validate_day_limit
-    return unless (
+    return if (
         @record.splittable_hours + TimerSession.created_by(@record.user)
         .recorded_on(@record.timer_start.to_date).sum(:hours)
-      ) > SettingsManager.max_hours_recorded_per_day.to_f
+      ) <= SettingsManager.max_hours_recorded_per_day.to_f
 
     @record.errors.add(:timer_start, :limit_reached_day)
   end
 
   def validate_session_limit
-    return unless @record.splittable_hours > SettingsManager.max_hours_recorded_per_session.to_f
+    return if @record.splittable_hours <= SettingsManager.max_hours_recorded_per_session.to_f
 
     @record.errors.add(:timer_start, :limit_reached_session)
   end
diff --git a/app/models/unfinished_timer_session_validator.rb b/app/models/unfinished_timer_session_validator.rb
index 5ddbb64..17e7a2e 100644
--- a/app/models/unfinished_timer_session_validator.rb
+++ b/app/models/unfinished_timer_session_validator.rb
@@ -8,7 +8,7 @@ def validate(record)
   end
 
   def validate_start_before_end_date
-    return if @record.timer_start.blank? || @record.timer_end.blank?
+    return if @record.timer_end.blank?
     return if @record.timer_end > @record.timer_start
 
     @record.errors.add(:timer_start, :after_end)