diff --git a/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt b/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt
index b40aaa1f509..5fba8640ec4 100644
--- a/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt
+++ b/Documentation/doc/Documentation/Tutorials/Tutorial_hello_world.txt
@@ -265,7 +265,7 @@ given by a direction, which is hardwired in the class
 
 \section intro_concept Concepts and Models
 
-In the previous section, we wrote that "Any model of the CGAL concept
+In the previous section, we wrote that: Any model of the CGAL concept
 Kernel provides what is required by the concept `ConvexHullTraits_2`.
 
 A \em concept is a set of requirements on a type, namely that it has