diff --git a/lib/word-to-markdown.rb b/lib/word-to-markdown.rb
index c81d506..8551eb6 100644
--- a/lib/word-to-markdown.rb
+++ b/lib/word-to-markdown.rb
@@ -63,14 +63,21 @@ def self.soffice_path
     end
   end
 
+  def self.soffice?
+    @soffice ||= !(soffice_path.nil? || soffice_version.nil?)
+  end
+
   def self.run_command(*args)
+    raise "LibreOffice executable not found" unless soffice?
     output, status = Open3.capture2e(soffice_path, *args)
     raise "Command `#{soffice_path} #{args.join(" ")}` failed: #{output}" if status != 0
     output
   end
 
   def self.soffice_version
-    run_command('--version').strip.sub "LibreOffice ", ""
+    return if soffice_path.nil?
+    output, status = Open3.capture2e(soffice_path, "--version")
+    output.strip.sub "LibreOffice ", "" if status == 0
   end
 
   # Pretty print the class in console
diff --git a/test/test_word_to_markdown.rb b/test/test_word_to_markdown.rb
index 395a2f2..04c1a11 100644
--- a/test/test_word_to_markdown.rb
+++ b/test/test_word_to_markdown.rb
@@ -53,4 +53,8 @@ class TestWordToMarkdown < Test::Unit::TestCase
   should "handle files with spaces" do
     validate_fixture "file with space", "This is paragraph text."
   end
+
+  should "know the soffice version" do
+    assert_match /\d\.\d\.\d\.\d .*/, WordToMarkdown.soffice_version
+  end
 end
diff --git a/test/test_word_to_markdown_lists.rb b/test/test_word_to_markdown_lists.rb
index 60f4cbb..f42b750 100644
--- a/test/test_word_to_markdown_lists.rb
+++ b/test/test_word_to_markdown_lists.rb
@@ -11,11 +11,11 @@ class TestWordToMarkdownLists < Test::Unit::TestCase
   end
 
   should "parse nested ols" do
-    validate_fixture "nested-ol", "1. One\n  1. Sub one\n  2. Sub two\n\n2. Two\n  1. Sub one\n    1. Sub sub one\n    2. Sub sub two\n\n  2. Sub two\n\n3. Three"
+    validate_fixture "nested-ol", "1. One\n  1. Sub one\n  2. Sub two\n2. Two\n  1. Sub one\n    1. Sub sub one\n    2. Sub sub two\n  2. Sub two\n3. Three"
   end
 
   should "parse nested uls" do
-    validate_fixture "nested-ul", "- One\n  - Sub one\n    - Sub sub one\n    - Sub sub two\n\n  - Sub two\n\n- Two"
+    validate_fixture "nested-ul", "- One\n  - Sub one\n    - Sub sub one\n    - Sub sub two\n  - Sub two\n- Two"
   end
 
   should "parse lists with links" do