diff --git a/lib/redmine/wiki_formatting/markdown/formatter.rb b/lib/redmine/wiki_formatting/markdown/formatter.rb
index 4afbc2fdd..d6139a73e 100644
--- a/lib/redmine/wiki_formatting/markdown/formatter.rb
+++ b/lib/redmine/wiki_formatting/markdown/formatter.rb
@@ -90,15 +90,13 @@ module Redmine
           i = 0
           l = 1
           inside_pre = false
-          @text.split(/(^(?:.+\r?\n\r?(?:\=+|\-+)|#+.+|~~~.*)\s*$)/).each do |part|
+          @text.split(/(^(?:.+\r?\n\r?(?:\=+|\-+)|#+.+|(?:~~~|```).*)\s*$)/).each do |part|
             level = nil
-            if part =~ /\A~{3,}(\S+)?\s*$/
-              if $1
-                if !inside_pre
-                  inside_pre = true
-                end
-              else
-                inside_pre = !inside_pre
+            if part =~ /\A(~{3,}|`{3,})(\S+)?\s*$/
+              if !inside_pre
+                inside_pre = true
+              elsif !$2
+                inside_pre = false
               end
             elsif inside_pre
               # nop
diff --git a/test/unit/lib/redmine/wiki_formatting/markdown_formatter_test.rb b/test/unit/lib/redmine/wiki_formatting/markdown_formatter_test.rb
index b8aa37ff2..f41ad4218 100644
--- a/test/unit/lib/redmine/wiki_formatting/markdown_formatter_test.rb
+++ b/test/unit/lib/redmine/wiki_formatting/markdown_formatter_test.rb
@@ -80,5 +80,60 @@ STR
     assert_equal '<p>This is a <a href="/issues">link</a></p>', @formatter.new(text).to_html.strip
   end
 
+  STR_WITH_PRE = [
+  # 0
+"# Title
+
+Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas sed libero.",
+  # 1
+"## Heading 2
+
+~~~ruby
+  def foo
+  end
+~~~
+
+Morbi facilisis accumsan orci non pharetra.
+
+```
+Pre Content:
+
+## Inside pre
+
+<tag> inside pre block
+
+Morbi facilisis accumsan orci non pharetra.
+```",
+  # 2
+"### Heading 3
+
+Nulla nunc nisi, egestas in ornare vel, posuere ac libero."]
+
+  def test_get_section_should_ignore_pre_content
+    text = STR_WITH_PRE.join("\n\n")
+
+    assert_section_with_hash STR_WITH_PRE[1..2].join("\n\n"), text, 2
+    assert_section_with_hash STR_WITH_PRE[2], text, 3
+  end
+
+  def test_update_section_should_not_escape_pre_content_outside_section
+    text = STR_WITH_PRE.join("\n\n")
+    replacement = "New text"
+
+    assert_equal [STR_WITH_PRE[0..1], "New text"].flatten.join("\n\n"),
+      @formatter.new(text).update_section(3, replacement)
+  end
+
+  private
+
+  def assert_section_with_hash(expected, text, index)
+    result = @formatter.new(text).get_section(index)
+
+    assert_kind_of Array, result
+    assert_equal 2, result.size
+    assert_equal expected, result.first, "section content did not match"
+    assert_equal Digest::MD5.hexdigest(expected), result.last, "section hash did not match"
+  end
+
   end
 end