diff --git a/README.asciidoc b/README.asciidoc
index 6e4c38183..082c0b980 100644
--- a/README.asciidoc
+++ b/README.asciidoc
@@ -431,7 +431,9 @@ the approach using ligatures.
 
 === How do I build kitty.app on macOS?
 
-Run:
+Install `optipng` and `rsvg-convert` using `brew` or similar (needed for the logo generation step).
+
+And run:
 ```
 logo/make.py
 ./setup.py kitty.app
diff --git a/logo/make.py b/logo/make.py
index 0e581df1e..9c09ba232 100755
--- a/logo/make.py
+++ b/logo/make.py
@@ -23,7 +23,7 @@ if os.path.exists(iconset):
     shutil.rmtree(iconset)
 os.mkdir(iconset)
 os.chdir(iconset)
-for sz in (16, 32, 128, 256, 512, 1024):
+for sz in (16, 32, 64, 128, 256, 512, 1024):
     iname = 'icon_{0}x{0}.png'.format(sz)
     iname2x = 'icon_{0}x{0}@2x.png'.format(sz // 2)
     render(iname, sz)