diff --git a/HandsOn/2-ObjectProgramming/Solution/exercice22.cpp b/HandsOn/2-ObjectProgramming/Solution/exercice22.cpp
index a4b8031a2b0cc77726e18733286ffb0fc9fe8986..15432ad3d79c13692f9d64190a9d1479edf22a84 100644
--- a/HandsOn/2-ObjectProgramming/Solution/exercice22.cpp
+++ b/HandsOn/2-ObjectProgramming/Solution/exercice22.cpp
@@ -194,7 +194,7 @@ public:
     TestDisplayPowerOfTwoApprox(int resolution);
     
     //! To make the class a concrete one.
-    virtual ~TestDisplayPowerOfTwoApprox() ;
+    virtual ~TestDisplayPowerOfTwoApprox() override;
     
 protected: