diff --git a/README.md b/README.md
index 76974dc5f..e81773061 100644
--- a/README.md
+++ b/README.md
@@ -14,12 +14,13 @@
 | Boost.Python >= 1.55.0 | ki18n (part of KF5) |
 
 ### Building
+Clone Calamares from GitHub and `cd` into the calamares directory, then:
 ```
 $ git submodule init
 $ git submodule update
 $ mkdir build
 $ cd build
-$ cmake -DCMAKE_BUILD_TYPE=Debug ..
+$ cmake -DCMAKE_BUILD_TYPE=Debug -DWITH_PARTITIONMANAGER=1 ..
 $ make
 ```