diff --git a/enrol/ldap/lang/en/enrol_ldap.php b/enrol/ldap/lang/en/enrol_ldap.php
index f6ec711cd36..4d850327ca4 100644
--- a/enrol/ldap/lang/en/enrol_ldap.php
+++ b/enrol/ldap/lang/en/enrol_ldap.php
@@ -53,6 +53,7 @@ $string['course_summary_key'] = 'Summary';
 $string['createcourseextid'] = 'CREATE User enrolled to a nonexistant course \'{$a->courseextid}\'';
 $string['createnotcourseextid'] = 'User enrolled to a nonexistant course \'{$a->courseextid}\'';
 $string['creatingcourse'] =  'Creating course \'{$a}\'...';
+$string['duplicateshortname'] = "Course creation failed. Duplicate short name. Skipping course with idnumber '{\$a->idnumber}'...";
 $string['editlock'] = 'Lock value';
 $string['emptyenrolment'] = "Empty enrolment for role '{\$a->role_shortname}' in course '{\$a->course_shortname}'\n";
 $string['enrolname'] = 'LDAP';
diff --git a/enrol/ldap/lib.php b/enrol/ldap/lib.php
index 9ebacb8be24..73eb118bdd3 100644
--- a/enrol/ldap/lib.php
+++ b/enrol/ldap/lib.php
@@ -990,6 +990,12 @@ class enrol_ldap_plugin extends enrol_plugin {
             $course->summary = $course_ext[$this->get_config('course_summary')][0];
         }
 
+        // Check if the shortname already exists if it does - skip course creation.
+        if ($DB->record_exists('course', array('shortname' => $course->shortname))) {
+            $trace->output(get_string('duplicateshortname', 'enrol_ldap', $course));
+            return false;
+        }
+
         $newcourse = create_course($course);
         return $newcourse->id;
     }