diff --git a/docs/readme.rst b/docs/readme.rst
index bb15cb6d..52dff093 100644
--- a/docs/readme.rst
+++ b/docs/readme.rst
@@ -46,7 +46,7 @@ The histolab package can be installed by using::
 
 Prerequisites
 *************
-histolab has only one sistem-wide dependency: `OpenSlide`.
+histolab has only one system-wide dependency: `OpenSlide`.
 
 You can download and install it from https://openslide.org/download/ according to your operating system.