1 files changed, 6 insertions, 2 deletions
diff --git a/Help/guide/tutorial/Step9/MathFunctions/mysqrt.cxx b/Help/guide/tutorial/Step9/MathFunctions/mysqrt.cxx
index 7d80ee9648..477d715205 100644
--- a/Help/guide/tutorial/Step9/MathFunctions/mysqrt.cxx
+++ b/Help/guide/tutorial/Step9/MathFunctions/mysqrt.cxx
@@ -1,10 +1,12 @@
-#include <iostream>
+#include "mysqrt.h"
 
-#include "MathFunctions.h"
+#include <iostream>
 
 // include the generated table
 #include "Table.h"
 
+namespace mathfunctions {
+namespace detail {
 // a hack square root calculation using simple operations
 double mysqrt(double x)
 {
@@ -31,3 +33,5 @@ double mysqrt(double x)
 
   return result;
 }
+}
+}