diff --git a/README.md b/README.md
index 2bdaedc8b3f30c48c5a7872576608387462bbe85..c6e785ca5202b09d2669058b8b5d118b03ff0f31 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ Detailed installation instructions, including how to install Python from scratch
 are described in the [detailed installation manual](docs/install-manual-detailed.md).
 
 
-If you now what you are doing, you can install as follows:
+If you know what you are doing, you can install as follows:
 
 ```
 python setup.py