diff --git a/admin/tool/log/store/legacy/tests/store_test.php b/admin/tool/log/store/legacy/tests/store_test.php
index c78e013d1b8..e571a235991 100644
--- a/admin/tool/log/store/legacy/tests/store_test.php
+++ b/admin/tool/log/store/legacy/tests/store_test.php
@@ -70,10 +70,10 @@ class logstore_legacy_store_testcase extends advanced_testcase {
 
         $this->setUser($user2);
         add_to_log($course1->id, 'xxxx', 'yyyy', '', '7', 0, 0);
-        //$this->assertDebuggingCalled();
+        $this->assertDebuggingCalled();
 
         add_to_log($course2->id, 'aaa', 'bbb', 'info.php', '666', $module2->cmid, $user1->id);
-        //$this->assertDebuggingCalled();
+        $this->assertDebuggingCalled();
 
         $logs = $DB->get_records('log', array(), 'id ASC');
         $this->assertCount(4, $logs);
@@ -143,7 +143,7 @@ class logstore_legacy_store_testcase extends advanced_testcase {
         \logstore_legacy\event\unittest_executed::create(
             array('context' => \context_system::instance(), 'other' => array('sample' => 5, 'xx' => 10)))->trigger();
         add_to_log($course1->id, 'xxxx', 'yyyy', '', '7', 0, 0);
-        //$this->assertDebuggingCalled();
+        $this->assertDebuggingCalled();
         $this->assertEquals(4, $DB->count_records('log'));
 
         // Another way to disable legacy completely.
@@ -154,7 +154,7 @@ class logstore_legacy_store_testcase extends advanced_testcase {
         \logstore_legacy\event\unittest_executed::create(
             array('context' => \context_system::instance(), 'other' => array('sample' => 5, 'xx' => 10)))->trigger();
         add_to_log($course1->id, 'xxxx', 'yyyy', '', '7', 0, 0);
-        //$this->assertDebuggingCalled();
+        $this->assertDebuggingCalled();
         $this->assertEquals(4, $DB->count_records('log'));
         // Set everything back.
         set_config('enabled_stores', '', 'tool_log');
diff --git a/lib/deprecatedlib.php b/lib/deprecatedlib.php
index 1897b76bd80..4e57a7d8c23 100644
--- a/lib/deprecatedlib.php
+++ b/lib/deprecatedlib.php
@@ -31,11 +31,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 /**
- * Add an entry to the log table.
- *
- * Add an entry to the log table.  These are "action" focussed rather
- * than web server hits, and provide a way to easily reconstruct what
- * any particular student has been doing.
+ * Add an entry to the legacy log table.
  *
  * @deprecated since 2.7 use new events instead
  *
@@ -49,8 +45,7 @@ defined('MOODLE_INTERNAL') || die();
  * @return void
  */
 function add_to_log($courseid, $module, $action, $url='', $info='', $cm=0, $user=0) {
-    // TODO: Uncomment after all add_to_log() are removed from standard distribution - ideally before 2.7 release.
-    //debugging('ideally all add_to_log() calls should be replaced() with new events', DEBUG_DEVELOPER);
+    debugging('add_to_log() has been deprecated, please rewrite your code to the new events API', DEBUG_DEVELOPER);
 
     // This is a nasty hack that allows us to put all the legacy stuff into legacy storage,
     // this way we may move all the legacy settings there too.