diff --git a/Parsedown.php b/Parsedown.php
index 610cc7a..6690451 100755
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -200,13 +200,14 @@ class Parsedown
 
                         $blocks []= $block;
 
-                        unset($block['first']);
-
                         $block['last'] = true;
                         $block['lines'] = array();
 
                         $block['lines'] []= preg_replace('/^[ ]{0,4}/', '', $matches[1]);
 
+                        unset($block['first']);
+                        unset($block['interrupted']);
+
                         continue 2;
                     }
 
diff --git a/tests/data/sparse_dense_list.html b/tests/data/sparse_dense_list.html
new file mode 100644
index 0000000..095bc73
--- /dev/null
+++ b/tests/data/sparse_dense_list.html
@@ -0,0 +1,7 @@
+<ul>
+<li>
+<p>li</p>
+</li>
+<li>li</li>
+<li>li</li>
+</ul>
\ No newline at end of file
diff --git a/tests/data/sparse_dense_list.md b/tests/data/sparse_dense_list.md
new file mode 100644
index 0000000..5768422
--- /dev/null
+++ b/tests/data/sparse_dense_list.md
@@ -0,0 +1,4 @@
+- li
+
+- li
+- li
\ No newline at end of file