diff --git a/config/config.go b/config/config.go
index c284627..812e00e 100644
--- a/config/config.go
+++ b/config/config.go
@@ -24,7 +24,6 @@ type Config struct {
 	}
 	Date struct {
 		MinuteGranularity int // Restricts the minutes on which office hours can start and end to multiples of it.
-		MaxDuration       int // Limits the length of office hours to minutes
 		EarliestStartTime struct {
 			Hour   int
 			Minute int
@@ -104,10 +103,6 @@ func validateConfig(conf *Config) error {
 		err = fmt.Errorf("Validating config: Earliest start time minute must be between 0 and 60, but is %d.", conf.Date.EarliestStartTime.Minute)
 		log.Println(err.Error())
 	}
-	if !(conf.Date.MaxDuration >= conf.Date.MinuteGranularity && conf.Date.MaxDuration <= 4*60) {
-		err = fmt.Errorf("Validating config: Maximum duration must be between %d minute and 4 hours, but is %d.", conf.Date.MinuteGranularity, conf.Date.MaxDuration)
-		log.Println(err.Error())
-	}
 	if !(conf.Date.LatestStartTime.Hour >= 0 && conf.Date.LatestStartTime.Hour <= 23) {
 		err = fmt.Errorf("Validating config: Latest start time hour must be between 0 and 23, but is %d.", conf.Date.LatestStartTime.Hour)
 		log.Println(err.Error())
diff --git a/config/config.json b/config/config.json
index 2e78982..40b1bb3 100644
--- a/config/config.json
+++ b/config/config.json
@@ -7,7 +7,6 @@
 	},
 	"date": {
 		"minuteGranularity": 5,
-		"maxDuration": 120,
 		"earliestStartTime": {
 			"hour" : 8,
 			"minute" : 0
diff --git a/controllers/addOfficeHourHandler.go b/controllers/addOfficeHourHandler.go
index 816a874..56289e7 100644
--- a/controllers/addOfficeHourHandler.go
+++ b/controllers/addOfficeHourHandler.go
@@ -16,7 +16,6 @@ type maskData struct {
 	Courses           []models.Course
 	Rooms             []models.Room
 	MinuteGranularity int
-	MaxDuration       int
 	EarliestStartTime struct {
 		Hour   int
 		Minute int
@@ -110,8 +109,8 @@ func (b *BaseHandler) AddOfficeHourHandler(w http.ResponseWriter, req *http.Requ
 	if err != nil {
 		errors = append(errors, "Die Dauer muss eine ganze Zahl sein.")
 	}
-	if !(duration >= b.config.Date.MinuteGranularity && duration <= b.config.Date.MaxDuration && duration%b.config.Date.MinuteGranularity == 0) {
-		errors = append(errors, fmt.Sprintf("Sprechstunden müssen zwischen %d und %d Minuten lang sein.", b.config.Date.MinuteGranularity, b.config.Date.MaxDuration))
+	if !(duration >= b.config.Date.MinuteGranularity && duration <= 120 && duration%b.config.Date.MinuteGranularity == 0) {
+		errors = append(errors, fmt.Sprintf("Sprechstunden müssen zwischen %d und 120 Minuten lang sein.", b.config.Date.MinuteGranularity))
 	}
 
 	roomname := req.FormValue("raumname")
@@ -145,7 +144,6 @@ func (b *BaseHandler) AddOfficeHourHandler(w http.ResponseWriter, req *http.Requ
 			courses,
 			rooms,
 			b.config.Date.MinuteGranularity,
-			b.config.Date.MaxDuration,
 			b.config.Date.EarliestStartTime,
 			b.config.Date.LatestStartTime,
 			courseid,
diff --git a/controllers/timetable.go b/controllers/timetable.go
index 1f9b413..0d7b379 100644
--- a/controllers/timetable.go
+++ b/controllers/timetable.go
@@ -51,7 +51,7 @@ func (b *BaseHandler) printTimetable(timetable map[models.Date]map[int]models.Of
 		return template.HTML("<p class=\"text-center\">Aktuell sind keine passenden Sprechstunden eingetragen.</p>")
 	}
 	var tableBody string
-	for hour := b.config.Date.EarliestStartTime.Hour; hour < b.config.Date.LatestStartTime.Hour+b.config.Date.MaxDuration/60; hour += 1 {
+	for hour := 8; hour < 19; hour += 1 {
 		for minute := 0; minute < 60; minute += b.config.Date.MinuteGranularity {
 			tableBody += "<tr>"
 			if minute == 0 {
diff --git a/dummydatasqlite.sql b/dummydatasqlite.sql
index a936c8c..f093505 100644
--- a/dummydatasqlite.sql
+++ b/dummydatasqlite.sql
@@ -15,7 +15,6 @@ INSERT INTO `course` (name) VALUES
 ('Analysis I'),
 ('Analysis II (engl.)'),
 ('Analysis II'),
-('Applied Proof Theory'),
 ('Aussagen- und Prädikatenlogik'),
 ('Automaten, Formale Sprachen und Entscheidbarkeit'),
 ('Banach- und C*-Algebren'),
diff --git a/templating/templates/addMask.html b/templating/templates/addMask.html
index ab7ed6a..1b36f24 100644
--- a/templating/templates/addMask.html
+++ b/templating/templates/addMask.html
@@ -90,7 +90,7 @@
 
           <div class="form-floating mb-3">
             <input class="form-control required" required name="dauer" id="dauer" type="number"
-             min="{{.MinuteGranularity}}" max="{{.MaxDuration}}" step="{{.MinuteGranularity}}"
+             min="{{.MinuteGranularity}}" max="120" step="{{.MinuteGranularity}}"
              {{ if ne .Duration 0}}value="{{.Duration}}"{{end}} placeholder="">
             <label for="dauer">Dauer in Minuten</label>
           </div>