diff --git a/README.md b/README.md
index 743cbaa..7a06a2c 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,12 @@
 A Python script to scrape wallpapers from https://4kwallpapers.com/.
 
 ## Usage
-The program takes a single command line argument, namely the root folder of
-whre you want all the pictures to go. It'll create sub-folders for all the
-categories, and download all pictures in one go. Yes, this can take a while
-(15m in my case, with a fast internet connection).
+The program takes one or more arguments. The first argument is the path to the
+download directory; this is where the pictures will end up. Each category
+creates a subdirectory for itself.
+
+Any arguments following the path correspond to category names. This allows you
+to only download certain categories.
+
+Do note that a full download can take a while: upwards of 15 minutes on a fast
+internet connection.
diff --git a/scraper.py b/scraper.py
index 2439dc6..2b0fb8d 100644
--- a/scraper.py
+++ b/scraper.py
@@ -68,9 +68,10 @@ class Scraper(PageHandler):
     def images(self):
         return sum([cat.images for cat in self.categories], [])
 
-    def download(self, dir_path):
+    def download(self, dir_path, cats=None):
         for cat in self.categories:
-            cat.download(dir_path)
+            if cats and cat.name in cats:
+                cat.download(dir_path)
 
 
 class Category(PageHandler):
@@ -155,4 +156,12 @@ class Image(PageHandler):
 
 if __name__ == "__main__":
     scraper = Scraper()
-    scraper.download(sys.argv[1])
+
+    if len(sys.argv) == 1:
+        print("No path provided.")
+
+    elif len(sys.argv) == 2:
+        scraper.download(sys.argv[1])
+
+    else:
+        scraper.download(sys.argv[1], sys.argv[2:])