diff --git a/block/HeadlineTrait.php b/block/HeadlineTrait.php
index efa7c5b..23ea56d 100644
--- a/block/HeadlineTrait.php
+++ b/block/HeadlineTrait.php
@@ -41,7 +41,7 @@ protected function consumeHeadline($lines, $current)
 			}
 			$block = [
 				'headline',
-				'content' => $this->parseInline(trim($lines[$current], "# \t")),
+				'content' => $this->parseInline(trim(trim($lines[$current], "#"))),
 				'level' => $level,
 			];
 			return [$block, $current];
diff --git a/tests/markdown-data/headline.html b/tests/markdown-data/headline.html
index 998b2ac..d2ecae6 100644
--- a/tests/markdown-data/headline.html
+++ b/tests/markdown-data/headline.html
@@ -12,6 +12,8 @@ <h4>a h4 heading</h4>
 <h4>a h4 heading</h4>
 <h6>h6</h6>
 <h6>h7</h6>
+<h4>other h4 heading with #</h4>
+<h4># h4 surrunded with #</h4>
 <p><a name="example"></a></p>
 <h2>head</h2>
 <p>hallo
diff --git a/tests/markdown-data/headline.md b/tests/markdown-data/headline.md
index f0bd8a5..d629688 100644
--- a/tests/markdown-data/headline.md
+++ b/tests/markdown-data/headline.md
@@ -28,6 +28,10 @@ par5
 
 ####### h7
 
+#### other h4 heading with # #######
+
+#### # h4 surrunded with # ##
+
 <a name="example"></a>
 head
 ----