diff --git a/lammpsdoc/txt2rst.py b/lammpsdoc/txt2rst.py
index 3576f72..2e4e7a0 100755
--- a/lammpsdoc/txt2rst.py
+++ b/lammpsdoc/txt2rst.py
@@ -161,7 +161,7 @@ class RSTFormatting(Formatting):
 
     def header(self, content, level):
         header_content = content.strip()
-        header_content = re.sub(r'[0-9]+\.[0-9]*\s+', '', header_content)
+        header_content = re.sub(r'[0-9]+(\.[0-9]*)*\s+', '', header_content)
         header_underline = RSTFormatting.RST_HEADER_TYPES[level-1] * len(header_content)
         return header_content + "\n" + header_underline + "\n"
 
diff --git a/tests/test_txt2rst.py b/tests/test_txt2rst.py
index b662a24..743e154 100644
--- a/tests/test_txt2rst.py
+++ b/tests/test_txt2rst.py
@@ -200,6 +200,11 @@ class TestFormatting(unittest.TestCase):
         self.assertEqual("Level\n"
                          "#####\n\n", s)
 
+    def test_filter_header_numbers_deep(self):
+        s = self.txt2rst.convert("1.1.1.1.1 Level :h1\n")
+        self.assertEqual("Level\n"
+                         "#####\n\n", s)
+
     def test_all_breaks(self):
         s = self.txt2rst.convert("one\n"
                                   "two\n"