diff --git a/controllers/copy.php b/controllers/copy.php
index 148dcb0bce0dda8e3587c2914ed49394b2aa3e6a..77c23e780d061f69914da93aa6ad268dad2096d0 100755
--- a/controllers/copy.php
+++ b/controllers/copy.php
@@ -4,22 +4,28 @@ class CopyController extends PluginController
 {
     public function info_action()
     {
-        PageLayout::setTitle(_("Wie soll kopiert werden?"));
-        $this->dozentensearch = new SQLSearch(
-            "SELECT DISTINCT auth_user_md5.user_id, CONCAT(auth_user_md5.Vorname, \" \", auth_user_md5.Nachname), auth_user_md5.perms, auth_user_md5.username " .
-            "FROM auth_user_md5 LEFT JOIN user_info ON (user_info.user_id = auth_user_md5.user_id) " .
-            "WHERE (CONCAT(auth_user_md5.Vorname, \" \", auth_user_md5.Nachname) LIKE :input " .
+        if (Request::getArray("c")) {
+            PageLayout::setTitle(_("Wie soll kopiert werden?"));
+            $this->dozentensearch = new SQLSearch(
+                "SELECT DISTINCT auth_user_md5.user_id, CONCAT(auth_user_md5.Vorname, \" \", auth_user_md5.Nachname), auth_user_md5.perms, auth_user_md5.username " .
+                "FROM auth_user_md5 LEFT JOIN user_info ON (user_info.user_id = auth_user_md5.user_id) " .
+                "WHERE (CONCAT(auth_user_md5.Vorname, \" \", auth_user_md5.Nachname) LIKE :input " .
                 "OR CONCAT(auth_user_md5.Nachname, \" \", auth_user_md5.Vorname) LIKE :input " .
                 "OR CONCAT(auth_user_md5.Nachname, \", \", auth_user_md5.Vorname) LIKE :input " .
                 "OR auth_user_md5.username LIKE :input) " .
                 "AND " . get_vis_query() . " " .
                 "AND auth_user_md5.perms = 'dozent' " .
-            "ORDER BY Vorname, Nachname", _("Lehrendennamen eingeben"), "user_id");
-        $this->semesters = array_reverse(Semester::getAll());
-        $this->semester = UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_SEMESTER_ID
-            ? Semester::find(UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_SEMESTER_ID)
-            : $this->semesters[0];
-        $this->have_coursegroups = true;
+                "ORDER BY Vorname, Nachname", _("Lehrendennamen eingeben"), "user_id");
+            $this->semesters = array_reverse(Semester::getAll());
+            $this->semester = UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_SEMESTER_ID
+                ? Semester::find(UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_SEMESTER_ID)
+                : $this->semesters[0];
+            if (Seminar_Perm::get()->have_perm('admin')) {
+                $this->have_coursegroups = true;
+            }
+        } else {
+            throw new Trails_Exception(400);
+        }
     }
 
     public function semester_start_und_ende_action($semester_id)
@@ -30,7 +36,7 @@ class CopyController extends PluginController
 
     public function process_action()
     {
-        if (Request::isPost()) {
+        if (Request::isPost() && count(Request::getArray("c"))) {
             $params = [
                 "semester_id", "dozent_id", "lock_copied_courses",
                 "invisible_copied_courses", "cycles", "resource_assignments",
diff --git a/plugin.manifest b/plugin.manifest
index 9898ce7d743d1219ca5b434f94f3cca4469aacd6..9c73cda19710959dbf235e9147a2e0a28d64ebc5 100755
--- a/plugin.manifest
+++ b/plugin.manifest
@@ -1,6 +1,6 @@
 pluginname=CourseCopy
 pluginclassname=CourseCopy
-version=1.6
+version=1.7
 origin=data-quest
 studipMinVersion=4.0
 studipMaxVersion=4.99.99
diff --git a/views/action/checkbox.php b/views/action/checkbox.php
index b04014dc3f88ff59629a2a13be5f2354837927b4..a65a134d8aa3c5fdbb2eee7cc11c3d709526e0f0 100755
--- a/views/action/checkbox.php
+++ b/views/action/checkbox.php
@@ -1 +1,3 @@
-<input type="checkbox" name="c[]" value="<?= htmlReady($course_id) ?>">
\ No newline at end of file
+<? if (Seminar_Perm::get()->have_studip_perm('dozent', $course_id)) : ?>
+<input type="checkbox" name="c[]" value="<?= htmlReady($course_id) ?>">
+<? endif ?>
\ No newline at end of file
diff --git a/views/copy/info.php b/views/copy/info.php
index df6a66fcad8a14e9b95d6ecf3ff97f53e6e16a5c..492c82d646ea3ad32995715831864fc33f9ee06a 100755
--- a/views/copy/info.php
+++ b/views/copy/info.php
@@ -20,21 +20,22 @@
                 <? endforeach ?>
             </select>
         </label>
-
-        <label>
-            <?= _("Lehrende ersetzen durch ...") ?>
-            <?
-            $qs = QuickSearch::get("dozent_id", $dozentensearch);
-            if (UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_DOZENT_ID) {
-                $qs->defaultValue(
-                    UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_DOZENT_ID,
-                    get_fullname(UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_DOZENT_ID)
-                );
-            }
-            echo $qs->render()
-            ?>
+        <? if (Seminar_Perm::get()->have_perm('admin')) : ?>
+            <label>
+                <?= _("Lehrende ersetzen durch ...") ?>
+                <?
+                $qs = QuickSearch::get("dozent_id", $dozentensearch);
+                if (UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_DOZENT_ID) {
+                    $qs->defaultValue(
+                        UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_DOZENT_ID,
+                        get_fullname(UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_DOZENT_ID)
+                    );
+                }
+                echo $qs->render()
+                ?>
 
             <label>
+                <? endif ?>
                 <input type="checkbox" name="copy_tutors" value="1"<?= UserConfig::get($GLOBALS['user']->id)->COURSECOPY_SETTINGS_COPY_TUTORS ? " checked" : "" ?>>
                 <?= _('Tutor/-innen mit übernehmen') ?>
             </label>