diff --git a/python/README.md b/python/README.md
index bb883222c..be69034f9 100644
--- a/python/README.md
+++ b/python/README.md
@@ -7,7 +7,7 @@ This is the Python wrapper around the GTSAM C++ library. We use our custom [wrap
 ## Requirements
 
 - If you want to build the GTSAM python library for a specific python version (eg 3.6),
-  use the `-DGTSAM_PYTHON_VERSION=3.6` option when running `cmake` otherwise the default interpreter will be used. For example:
+  use the `-DGTSAM_PYTHON_VERSION=3.6` option when running `cmake` otherwise the default interpreter will be used. For example, if you local Python version is 3.6.10, then run:
   ```bash
   cmake .. -DGTSAM_BUILD_PYTHON=1 -DGTSAM_PYTHON_VERSION=3.6.10
   ```