diff --git a/docs/installation.rst b/docs/installation.rst
index 8a88ecf24..a0b6f867d 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -152,12 +152,12 @@ Many of Pillow's features require external libraries:
   * Pillow has been tested with libjpeg versions **6b**, **8**, **9-9d** and
     libjpeg-turbo version **8**.
   * Starting with Pillow 3.0.0, libjpeg is required by default, but
-    may be disabled with the ``--disable-jpeg`` flag.
+    may be disabled with the ``-C jpeg=disable`` flag.
 
 * **zlib** provides access to compressed PNGs
 
   * Starting with Pillow 3.0.0, zlib is required by default, but may
-    be disabled with the ``--disable-zlib`` flag.
+    be disabled with the ``-C zlib=disable`` flag.
 
 * **libtiff** provides compressed TIFF functionality