diff --git a/README.md b/README.md
index 901cca256..7064e5a99 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ The aim of this project is to provide a tool for WSI processing in a reproducibl
 
 ### Prerequisites 
 
-Histolab has only one sistem-wide dependency: OpenSlide.
+Histolab has only one system-wide dependency: OpenSlide.
 
 You can download and install it from [OpenSlide](https://openslide.org/download/) according to your operating system.
 
diff --git a/docs/index.rst b/docs/index.rst
index 7d6dca549..5fadbeb1b 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -44,7 +44,7 @@ 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.
 
diff --git a/docs/readme.rst b/docs/readme.rst
index bb15cb6de..52dff0938 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.