diff --git a/src/Wallabag/CoreBundle/Helper/RuleBasedTagger.php b/src/Wallabag/CoreBundle/Helper/RuleBasedTagger.php
index b490e2090..add27db2b 100644
--- a/src/Wallabag/CoreBundle/Helper/RuleBasedTagger.php
+++ b/src/Wallabag/CoreBundle/Helper/RuleBasedTagger.php
@@ -8,6 +8,7 @@ use Wallabag\CoreBundle\Entity\Tag;
 use Wallabag\CoreBundle\Repository\EntryRepository;
 use Wallabag\CoreBundle\Repository\TagRepository;
 use Wallabag\UserBundle\Entity\User;
+use Psr\Log\LoggerInterface;
 
 class RuleBasedTagger
 {
@@ -15,11 +16,12 @@ class RuleBasedTagger
     private $tagRepository;
     private $entryRepository;
 
-    public function __construct(RulerZ $rulerz, TagRepository $tagRepository, EntryRepository $entryRepository)
+    public function __construct(RulerZ $rulerz, TagRepository $tagRepository, EntryRepository $entryRepository, LoggerInterface $logger)
     {
         $this->rulerz = $rulerz;
         $this->tagRepository = $tagRepository;
         $this->entryRepository = $entryRepository;
+        $this->logger = $logger;
     }
 
     /**
@@ -36,6 +38,11 @@ class RuleBasedTagger
                 continue;
             }
 
+            $this->logger->info('Matching rule.', [
+                'rule' => $rule->getRule(),
+                'tags' => $rule->getTags(),
+            ]);
+
             foreach ($rule->getTags() as $label) {
                 $tag = $this->getTag($label);
 
diff --git a/src/Wallabag/CoreBundle/Resources/config/services.yml b/src/Wallabag/CoreBundle/Resources/config/services.yml
index 6c9195ce5..a9134ac3b 100644
--- a/src/Wallabag/CoreBundle/Resources/config/services.yml
+++ b/src/Wallabag/CoreBundle/Resources/config/services.yml
@@ -99,6 +99,7 @@ services:
             - "@rulerz"
             - "@wallabag_core.tag_repository"
             - "@wallabag_core.entry_repository"
+            - "@logger"
 
     # repository as a service
     wallabag_core.entry_repository:
diff --git a/tests/Wallabag/CoreBundle/Helper/RuleBasedTaggerTest.php b/tests/Wallabag/CoreBundle/Helper/RuleBasedTaggerTest.php
index 17b08c2ac..1e21f4004 100644
--- a/tests/Wallabag/CoreBundle/Helper/RuleBasedTaggerTest.php
+++ b/tests/Wallabag/CoreBundle/Helper/RuleBasedTaggerTest.php
@@ -2,6 +2,8 @@
 
 namespace Tests\Wallabag\CoreBundle\Helper;
 
+use Monolog\Handler\TestHandler;
+use Monolog\Logger;
 use Wallabag\CoreBundle\Entity\Config;
 use Wallabag\CoreBundle\Entity\Entry;
 use Wallabag\CoreBundle\Entity\Tag;
@@ -15,14 +17,19 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
     private $tagRepository;
     private $entryRepository;
     private $tagger;
+    private $logger;
+    private $handler;
 
     public function setUp()
     {
         $this->rulerz = $this->getRulerZMock();
         $this->tagRepository = $this->getTagRepositoryMock();
         $this->entryRepository = $this->getEntryRepositoryMock();
+        $this->logger = $this->getLogger();
+        $this->handler = new TestHandler();
+        $this->logger->pushHandler($this->handler);
 
-        $this->tagger = new RuleBasedTagger($this->rulerz, $this->tagRepository, $this->entryRepository);
+        $this->tagger = new RuleBasedTagger($this->rulerz, $this->tagRepository, $this->entryRepository, $this->logger);
     }
 
     public function testTagWithNoRule()
@@ -32,6 +39,8 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
         $this->tagger->tag($entry);
 
         $this->assertTrue($entry->getTags()->isEmpty());
+        $records = $this->handler->getRecords();
+        $this->assertCount(0, $records);
     }
 
     public function testTagWithNoMatchingRule()
@@ -49,6 +58,8 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
         $this->tagger->tag($entry);
 
         $this->assertTrue($entry->getTags()->isEmpty());
+        $records = $this->handler->getRecords();
+        $this->assertCount(0, $records);
     }
 
     public function testTagWithAMatchingRule()
@@ -70,6 +81,9 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
         $tags = $entry->getTags();
         $this->assertSame('foo', $tags[0]->getLabel());
         $this->assertSame('bar', $tags[1]->getLabel());
+
+        $records = $this->handler->getRecords();
+        $this->assertCount(1, $records);
     }
 
     public function testTagWithAMixOfMatchingRules()
@@ -90,6 +104,8 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
 
         $tags = $entry->getTags();
         $this->assertSame('foo', $tags[0]->getLabel());
+        $records = $this->handler->getRecords();
+        $this->assertCount(1, $records);
     }
 
     public function testWhenTheTagExists()
@@ -118,6 +134,8 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
 
         $tags = $entry->getTags();
         $this->assertSame($tag, $tags[0]);
+        $records = $this->handler->getRecords();
+        $this->assertCount(1, $records);
     }
 
     public function testSameTagWithDifferentfMatchingRules()
@@ -138,6 +156,8 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
 
         $tags = $entry->getTags();
         $this->assertCount(1, $tags);
+        $records = $this->handler->getRecords();
+        $this->assertCount(2, $records);
     }
 
     public function testTagAllEntriesForAUser()
@@ -209,4 +229,9 @@ class RuleBasedTaggerTest extends \PHPUnit_Framework_TestCase
             ->disableOriginalConstructor()
             ->getMock();
     }
+
+    private function getLogger()
+    {
+        return new Logger('foo');
+    }
 }