diff --git a/README.md b/README.md
index 39f4e3449..92aaaa100 100644
--- a/README.md
+++ b/README.md
@@ -111,7 +111,7 @@ Next, we need the PythonQt runtime.
 As a last step, we need to build the extensions.
 
 1. cd into `extensions`
-2. qmake `src.pro`
+2. qmake `extensions.pro`
 
    `qmake CONFIG+=Release extensions.pro`