diff --git a/app/controllers/resources/booking.php b/app/controllers/resources/booking.php
index d05862d78777c1d6dde74a72c9c1072d1e211117..63d126168d62d0a46e0eb99a4607c188ac0a0873 100644
--- a/app/controllers/resources/booking.php
+++ b/app/controllers/resources/booking.php
@@ -1598,7 +1598,7 @@ class Resources_BookingController extends AuthenticatedController
                             ]
                         ],
                         $this->booking->getRepetitionInterval(),
-                        $this->booking->repeat_quantity,
+                        0,
                         $this->booking->repeat_end,
                         $this->booking->preparation_time,
                         $this->booking->description,
diff --git a/app/controllers/room_management/planning.php b/app/controllers/room_management/planning.php
index d30d23c90ca6cf63b1721f13d7acfa5f6b09bcea..7f01e8647926cff37ba005c829b385bcee681d06 100644
--- a/app/controllers/room_management/planning.php
+++ b/app/controllers/room_management/planning.php
@@ -934,7 +934,6 @@ class RoomManagement_PlanningController extends AuthenticatedController
                 $copy->preparation_time = $booking->preparation_time;
                 $copy->booking_type = $booking->booking_type;
                 $copy->repeat_end = $target_repeat_end->getTimestamp();
-                $copy->repeat_quantity = $booking->repeat_quantity;
                 $copy->repetition_interval = $booking->repetition_interval;
                 $copy->internal_comment = $booking->internal_comment;
                 if ($this->step == 3) {
diff --git a/db/migrations/5.3.5_remove_bookings_repeat_quantity.php b/db/migrations/5.3.5_remove_bookings_repeat_quantity.php
new file mode 100644
index 0000000000000000000000000000000000000000..d112906af81b9baf8018338be89b4f63632af755
--- /dev/null
+++ b/db/migrations/5.3.5_remove_bookings_repeat_quantity.php
@@ -0,0 +1,21 @@
+<?php
+
+class RemoveBookingsRepeatQuantity extends Migration
+{
+    public function description()
+    {
+        return 'Remove unused column repeat_quantity from table resource_bookings';
+    }
+
+    protected function up()
+    {
+        $query = 'ALTER TABLE resource_bookings DROP COLUMN repeat_quantity';
+        DBManager::get()->exec($query);
+    }
+
+    protected function down()
+    {
+        $query = 'ALTER TABLE resource_bookings ADD COLUMN repeat_quantity int(2) AFTER repeat_end';
+        DBManager::get()->exec($query);
+    }
+}
diff --git a/lib/models/resources/Resource.class.php b/lib/models/resources/Resource.class.php
index 99d335f3357efd8675e3630536e9337b912a3271..0a04dc51a69dc4f0baf0198f0e7d6c03f8ddc323 100644
--- a/lib/models/resources/Resource.class.php
+++ b/lib/models/resources/Resource.class.php
@@ -645,7 +645,7 @@ class Resource extends SimpleORMap implements StudipItem
      *     DateInterval object.
      *     In case repetitions are specified by their amount set this
      *     parameter to null.
-     * @param int $repetition_amount
+     * @param int $repetition_amount (obsolete, has no effect)
      * @param int $preparation_time The preparation time which is needed before
      *     the real start time. This will be substracted
      *     from the begin timestamp and stored in an extra column of the
@@ -841,8 +841,6 @@ class Resource extends SimpleORMap implements StudipItem
                 } else {
                     $booking->repeat_end = $repetition_end_date;
                 }
-            } elseif ($repetition_amount) {
-                $booking->repeat_quantity = $repetition_amount;
             }
 
             $booking->repetition_interval = $repetition_interval->format('P%YY%MM%DD');
diff --git a/lib/models/resources/ResourceBooking.class.php b/lib/models/resources/ResourceBooking.class.php
index a8e65dd07e46e742d25a0b9fac3b579f8f79644e..3d8ec28991643a9804513fd451d8ea1ca0c2059b 100644
--- a/lib/models/resources/ResourceBooking.class.php
+++ b/lib/models/resources/ResourceBooking.class.php
@@ -41,7 +41,6 @@
  *     3 = planned booking (reservation from external tools)
  *
  * @property int repeat_end database column
- * @property int repeat_quantity database column
  * @property string repetition_interval database column
  *     The repetition_interval column contains a date interval string in a
  *     format that is accepted by the DateInterval class constructor.
@@ -469,12 +468,12 @@ class ResourceBooking extends SimpleORMap implements PrivacyObject, Studip\Calen
         }
 
         if ($this->repetition_interval) {
-            if (!($this->repeat_quantity || $this->repeat_end)) {
+            if (!$this->repeat_end) {
                 throw new InvalidArgumentException(
                     _('Es wurde ein Wiederholungsintervall ohne Begrenzung angegeben!')
                 );
             }
-            if ((!$this->repeat_quantity) && ($this->real_begin > $this->repeat_end)) {
+            if ($this->real_begin > $this->repeat_end) {
                 throw new InvalidArgumentException(
                     _('Der Startzeitpunkt darf nicht hinter dem Ende der Wiederholungen liegen!')
                 );
@@ -717,12 +716,12 @@ class ResourceBooking extends SimpleORMap implements PrivacyObject, Studip\Calen
         if ($this->repetition_interval) {
             $repetition_interval = $this->getRepetitionInterval();
 
-            if (!($this->repeat_quantity || $this->repeat_end)) {
+            if (!$this->repeat_end) {
                 throw new InvalidArgumentException(
                     _('Es wurde ein Wiederholungsintervall ohne Begrenzung angegeben!')
                 );
             }
-            if ((!$this->repeat_quantity) && ($this->real_begin > $this->repeat_end)) {
+            if ($this->real_begin > $this->repeat_end) {
                 throw new InvalidArgumentException(
                     _('Der Startzeitpunkt darf nicht hinter dem Ende der Wiederholungen liegen!')
                 );
@@ -1208,7 +1207,7 @@ class ResourceBooking extends SimpleORMap implements PrivacyObject, Studip\Calen
             )
         ];
 
-        if (($this->repeat_quantity > 0) || $this->repeat_end) {
+        if ($this->repeat_end) {
             //Repetition: we must check which repetition interval has been
             //selected and then create entries for each repetition.
             //Repetition starts with the begin date and ends with the
diff --git a/lib/raumzeit/SingleDate.class.php b/lib/raumzeit/SingleDate.class.php
index d5f1d00423e76eef45886a5cc51c6193d18f918a..289187fd58d8a4eda6d8ff448532718eb4e5f5a1 100644
--- a/lib/raumzeit/SingleDate.class.php
+++ b/lib/raumzeit/SingleDate.class.php
@@ -645,7 +645,6 @@ class SingleDate
             $changeAssign->begin = $this->date;
             $changeAssign->end = $this->end_time;
             $changeAssign->repeat_end = $this->end_time;
-            $changeAssign->repeat_quantity = 0;
             $changeAssign->repetition_interval = '';
             if ($preparation_time > 0) {
                 $changeAssign->preparation_time = $preparation_time * 60;
diff --git a/tests/functional/lib/models/resources/ResourceTest.php b/tests/functional/lib/models/resources/ResourceTest.php
index 66eae5583bb7a50be28ed54ef80c8c91294ff391..75a082a0fb6bc0fbd5dac23b9067e1dd637df5d7 100644
--- a/tests/functional/lib/models/resources/ResourceTest.php
+++ b/tests/functional/lib/models/resources/ResourceTest.php
@@ -253,11 +253,6 @@ class ResourceTest extends \Codeception\Test\Unit
             $this->booking->repeat_end
         );
 
-        $this->assertEquals(
-            null,
-            $this->booking->repeat_quantity
-        );
-
         $this->assertEquals(
             'P00Y00M02D',
             $this->booking->repetition_interval