diff --git a/admin/tool/uploadcourse/classes/course.php b/admin/tool/uploadcourse/classes/course.php
index 6f2cffa410d..8ae7a8d5126 100644
--- a/admin/tool/uploadcourse/classes/course.php
+++ b/admin/tool/uploadcourse/classes/course.php
@@ -412,6 +412,12 @@ class tool_uploadcourse_course {
                 $this->error('invalidshortname', new lang_string('invalidshortname', 'tool_uploadcourse'));
                 return false;
             }
+
+            // Ensure we don't overflow the maximum length of the shortname field.
+            if (core_text::strlen($this->shortname) > 255) {
+                $this->error('invalidshortnametoolong', new lang_string('invalidshortnametoolong', 'tool_uploadcourse', 255));
+                return false;
+            }
         }
 
         $exists = $this->exists();
@@ -479,6 +485,12 @@ class tool_uploadcourse_course {
             return false;
         }
 
+        // Ensure we don't overflow the maximum length of the fullname field.
+        if (!empty($coursedata['fullname']) && core_text::strlen($coursedata['fullname']) > 254) {
+            $this->error('invalidfullnametoolong', new lang_string('invalidfullnametoolong', 'tool_uploadcourse', 254));
+            return false;
+        }
+
         // If the course does not exist, or will be forced created.
         if (!$exists || $mode === tool_uploadcourse_processor::MODE_CREATE_ALL) {
 
diff --git a/admin/tool/uploadcourse/lang/en/tool_uploadcourse.php b/admin/tool/uploadcourse/lang/en/tool_uploadcourse.php
index db95617ab7d..2fdcc69fa51 100644
--- a/admin/tool/uploadcourse/lang/en/tool_uploadcourse.php
+++ b/admin/tool/uploadcourse/lang/en/tool_uploadcourse.php
@@ -93,6 +93,8 @@ $string['invalideupdatemode'] = 'Invalid update mode selected';
 $string['invalidvisibilitymode'] = 'Invalid visibility mode given';
 $string['invalidroles'] = 'Invalid role names: {$a}';
 $string['invalidshortname'] = 'Invalid shortname';
+$string['invalidfullnametoolong'] = 'The fullname field is limited to {$a} characters';
+$string['invalidshortnametoolong'] = 'The shortname field is limited to {$a} characters';
 $string['missingmandatoryfields'] = 'Missing value for mandatory fields: {$a}';
 $string['missingshortnamenotemplate'] = 'Missing shortname and shortname template not set';
 $string['mode'] = 'Upload mode';
diff --git a/admin/tool/uploadcourse/tests/course_test.php b/admin/tool/uploadcourse/tests/course_test.php
index c0d29e0d15a..0add18ea2cc 100644
--- a/admin/tool/uploadcourse/tests/course_test.php
+++ b/admin/tool/uploadcourse/tests/course_test.php
@@ -82,6 +82,37 @@ class tool_uploadcourse_course_testcase extends advanced_testcase {
         $this->assertArrayHasKey('invalidshortname', $co->get_errors());
     }
 
+    public function test_invalid_shortname_too_long() {
+        $this->resetAfterTest();
+
+        $mode = tool_uploadcourse_processor::MODE_CREATE_NEW;
+        $updatemode = tool_uploadcourse_processor::UPDATE_NOTHING;
+
+        $upload = new tool_uploadcourse_course($mode, $updatemode, [
+            'category' => 1,
+            'fullname' => 'New course',
+            'shortname' => str_repeat('X', 2000),
+        ]);
+
+        $this->assertFalse($upload->prepare());
+        $this->assertArrayHasKey('invalidshortnametoolong', $upload->get_errors());
+    }
+
+    public function test_invalid_fullname_too_long() {
+        $this->resetAfterTest();
+
+        $mode = tool_uploadcourse_processor::MODE_CREATE_NEW;
+        $updatemode = tool_uploadcourse_processor::UPDATE_NOTHING;
+
+        $upload = new tool_uploadcourse_course($mode, $updatemode, [
+            'category' => 1,
+            'fullname' => str_repeat('X', 2000),
+        ]);
+
+        $this->assertFalse($upload->prepare());
+        $this->assertArrayHasKey('invalidfullnametoolong', $upload->get_errors());
+    }
+
     public function test_invalid_visibility() {
         $this->resetAfterTest(true);
         $mode = tool_uploadcourse_processor::MODE_CREATE_NEW;