diff --git a/admin/registration/register.php b/admin/registration/register.php
index d7283e36c9c..13bf40c3cb2 100644
--- a/admin/registration/register.php
+++ b/admin/registration/register.php
@@ -45,7 +45,7 @@ $huburl = optional_param('huburl', '', PARAM_URL);
 $password = optional_param('password', '', PARAM_TEXT);
 $hubname = optional_param('hubname', '', PARAM_TEXT);
 if (empty($huburl) or !confirm_sesskey()) {
-    throw new moodle_exception('cannotaccessthispage');
+    throw new moodle_exception('missingparameter');
 }
 
 /* TO DO
@@ -158,4 +158,4 @@ $siteregistrationform->display();
 
 
 
-echo $OUTPUT->footer();
\ No newline at end of file
+echo $OUTPUT->footer();
diff --git a/course/publish/metadata.php b/course/publish/metadata.php
index 2d64010544f..e45a1f16a36 100644
--- a/course/publish/metadata.php
+++ b/course/publish/metadata.php
@@ -50,7 +50,7 @@ if (has_capability('moodle/course:publish', get_context_instance(CONTEXT_COURSE,
     $huburl = optional_param('huburl', '', PARAM_URL);
     $hubname = optional_param('hubname', '', PARAM_TEXT);
     if (empty($huburl) or !confirm_sesskey()) {
-        throw new moodle_exception('cannotaccessthispage');
+        throw new moodle_exception('missingparameter');
     }
 
     //set the publication form
@@ -71,4 +71,4 @@ if (has_capability('moodle/course:publish', get_context_instance(CONTEXT_COURSE,
 
     echo $OUTPUT->footer();
 
-}
\ No newline at end of file
+}
diff --git a/course/publish/publish.php b/course/publish/publish.php
index ea00fa7f25b..95ea168c5c0 100644
--- a/course/publish/publish.php
+++ b/course/publish/publish.php
@@ -54,7 +54,7 @@ if (has_capability('moodle/course:publish', get_context_instance(CONTEXT_COURSE,
     $huburl = optional_param('huburl', '', PARAM_URL);
     $hubname = optional_param('hubname', '', PARAM_TEXT);
     if (empty($huburl) or !confirm_sesskey()) {
-        throw new moodle_exception('cannotaccessthispage');
+        throw new moodle_exception('missingparameter');
     }
 
     $advertise = optional_param('advertise', false, PARAM_BOOL);
@@ -174,4 +174,4 @@ if (has_capability('moodle/course:publish', get_context_instance(CONTEXT_COURSE,
     }
 
     echo $OUTPUT->footer();
-}
\ No newline at end of file
+}