diff --git a/main.js b/main.js
index 9adeee6..50ea921 100644
--- a/main.js
+++ b/main.js
@@ -97,7 +97,7 @@ targetConfiguration.targets.forEach(target => {
 
     // Create target archive and write stream.
     const categoryArchive = archiver('zip')
-    categoryArchive.pipe(fs.createWriteStream(path.join(targetPath, `${category.name}.zip`)))
+    categoryArchive.pipe(fs.createWriteStream(path.join(targetPath, `${sanitizeFilename(category.name)}.zip`)))
 
     // Process all emojis in this category.
     const emojiBufferPromises = category.emojis.map(async (emoji) => {
@@ -148,5 +148,13 @@ targetConfiguration.targets.forEach(target => {
 })
 
 
+function sanitizeFilename(filename) {
+  return filename
+    .replace(/&/g, 'and')
+    .replace(/\s/g, '_')
+    .toLowerCase()
+}
+
+
 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
diff --git a/package.json b/package.json
index 4de4571..a3ace32 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "notes-sametime-emojis",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "",
   "main": "main.js",
   "scripts": {