diff --git a/Lectures/L27_DesignPatterns/DesignPatterns.tex b/Lectures/L27_DesignPatterns/DesignPatterns.tex
index 526e311e03d50fae05e772c4418d86305f66d2de..265de9e74cac00c6b7037e2793e995d4962c0a10 100755
--- a/Lectures/L27_DesignPatterns/DesignPatterns.tex
+++ b/Lectures/L27_DesignPatterns/DesignPatterns.tex
@@ -318,7 +318,7 @@ TBD
 \bi
 \item Advantages
 \bi
-\item Simultaneous develoment
+\item Simultaneous development
 \item High cohesion
 \item Low coupling
 \item Ease of modification