diff --git a/documentation/ethercat_doc.tex b/documentation/ethercat_doc.tex
index a2f6f62f..c2df2830 100644
--- a/documentation/ethercat_doc.tex
+++ b/documentation/ethercat_doc.tex
@@ -169,7 +169,7 @@ The list below gives a short summary of the master features.
 
 \begin{itemize}
 
-\item Designed as a kernel module for Linux 2.6 / 3.x.
+\item Designed as a kernel module for Linux from version 2.6 (or newer).
 
 \item Implemented according to IEC 61158-12 \cite{dlspec} \cite{alspec}.