diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e3fbd98
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+build
+node_modules
diff --git a/magic/magic.mgc b/magic/magic.mgc
index 2fdc46d..e701e04 100644
Binary files a/magic/magic.mgc and b/magic/magic.mgc differ
diff --git a/package.json b/package.json
index 68a8afa..9d3ee72 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mmmagic",
-  "version": "0.5.3",
+  "version": "0.5.4",
   "author": "Brian White <mscdex@mscdex.net>",
   "description": "An async libmagic binding for node.js for detecting content types by data inspection",
   "main": "./lib/index",
diff --git a/test/fixtures/doc_as_doc.docx b/test/fixtures/doc_as_doc.docx
new file mode 100644
index 0000000..bc215f7
Binary files /dev/null and b/test/fixtures/doc_as_doc.docx differ
diff --git a/test/fixtures/doc_as_zip.docx b/test/fixtures/doc_as_zip.docx
new file mode 100644
index 0000000..d7c5dfb
Binary files /dev/null and b/test/fixtures/doc_as_zip.docx differ
diff --git "a/test/fixtures/t\303\251st.txt" b/test/fixtures/test.txt
similarity index 100%
rename from "test/fixtures/t\303\251st.txt"
rename to test/fixtures/test.txt
diff --git a/test/test.js b/test/test.js
index 934b011..ba04854 100644
--- a/test/test.js
+++ b/test/test.js
@@ -78,7 +78,7 @@ var tests = [
   },
   { run: function() {
       var magic = new mmm.Magic(mmm.MAGIC_MIME_TYPE);
-      magic.detectFile(path.join(__dirname, 'fixtures', 'tést.txt'),
+      magic.detectFile(path.join(__dirname, 'fixtures', 'test.txt'),
                        function(err, result) {
         assert.strictEqual(err, null);
         assert.strictEqual(result, 'text/x-c++');
@@ -87,6 +87,28 @@ var tests = [
     },
     what: 'detectFile - UTF-8 filename'
   },
+  { run: function() {
+      var magic = new mmm.Magic(mmm.MAGIC_MIME_TYPE);
+      magic.detectFile(path.join(__dirname, 'fixtures', 'doc_as_zip.docx'),
+                     function(err, result) {
+        assert.strictEqual(err, null);
+        assert.strictEqual(result, 'application/vnd.openxmlformats-officedocument.wordprocessingml.document');
+        next();
+      });
+    },
+    what: 'detectFile - docx as zip file'
+  },
+  { run: function() {
+      var magic = new mmm.Magic(mmm.MAGIC_MIME_TYPE);
+      magic.detectFile(path.join(__dirname, 'fixtures', 'doc_as_doc.docx'),
+                     function(err, result) {
+        assert.strictEqual(err, null);
+        assert.strictEqual(result, 'application/vnd.openxmlformats-officedocument.wordprocessingml.document');
+        next();
+      });
+    },
+    what: 'detectFile - docx as docx file'
+  },
   { run: function() {
       var buf = fs.readFileSync(path.join(__dirname, '..', 'src', 'binding.cc'));
       var magic = new mmm.Magic(mmm.MAGIC_MIME_TYPE);
diff --git a/yarn.lock b/yarn.lock
new file mode 100644
index 0000000..ce1a872
--- /dev/null
+++ b/yarn.lock
@@ -0,0 +1,8 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+nan@^2.13.2:
+  version "2.14.2"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.2.tgz#f5376400695168f4cc694ac9393d0c9585eeea19"
+  integrity sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ==