diff --git a/src/Potaka/BbCode/Tokenizer/Tokenizer.php b/src/Potaka/BbCode/Tokenizer/Tokenizer.php
index 90abc87..c85c164 100644
--- a/src/Potaka/BbCode/Tokenizer/Tokenizer.php
+++ b/src/Potaka/BbCode/Tokenizer/Tokenizer.php
@@ -35,7 +35,8 @@ class Tokenizer
                     if ($textAsArray[$tmpPosion] === ']') {
                         $closeTagFound = true;
                         break;
-                    } elseif ($textAsArray[$tmpPosion] === '=') {
+                    // for the time being we support only 1 argument
+                    } elseif ($textAsArray[$tmpPosion] === '=' && $argumentFound === false) {
                         $argumentFound = true;
                     } else {
                         if ($argumentFound) {
diff --git a/tests/phpUnit/Test/Potaka/BbCode/Tokenizer/TokenizerTest.php b/tests/phpUnit/Test/Potaka/BbCode/Tokenizer/TokenizerTest.php
index eb21782..347e36f 100644
--- a/tests/phpUnit/Test/Potaka/BbCode/Tokenizer/TokenizerTest.php
+++ b/tests/phpUnit/Test/Potaka/BbCode/Tokenizer/TokenizerTest.php
@@ -231,4 +231,28 @@ class TokenizerTest extends TestCase
 
         $this->assertSameTokenized($expected, $result);
     }
+
+    /**
+     * @see https://github.com/angelk/bbCode/issues/17
+     */
+    public function testInvalidOptions()
+    {
+        $tokenizer = new Tokenizer();
+        $url = 'https://www.facebook.com/permalink.php?story_fbid=1554622461246932&id=121306641245195';
+        $text = 'a[url=' . $url . ']fb[/url]';
+        $result = $tokenizer->tokenize($text);
+        $expected = new Tag(null);
+
+        $urlTag = new Tag('url');
+        $urlTag->setArgumen($url);
+        $urlTag->addTag(
+            (new Tag(null))->setText('fb')
+        );
+
+        $expected->addTag(
+            (new Tag(null))->setText('a')
+        )->addTag($urlTag);
+
+        $this->assertSameTokenized($expected, $result);
+    }
 }