diff --git a/src/10_PITF/Testat/Bank.h b/src/10_PITF/Testat/Bank.h
index a56cf3d..b88de76 100644
--- a/src/10_PITF/Testat/Bank.h
+++ b/src/10_PITF/Testat/Bank.h
@@ -6,6 +6,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/BankAccount.h b/src/10_PITF/Testat/BankAccount.h
index 66f4e61..79b3799 100644
--- a/src/10_PITF/Testat/BankAccount.h
+++ b/src/10_PITF/Testat/BankAccount.h
@@ -9,6 +9,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/Bill.h b/src/10_PITF/Testat/Bill.h
index 8dc300d..f3e82c5 100644
--- a/src/10_PITF/Testat/Bill.h
+++ b/src/10_PITF/Testat/Bill.h
@@ -6,6 +6,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/Cash.h b/src/10_PITF/Testat/Cash.h
index 0bb8478..64ee19d 100644
--- a/src/10_PITF/Testat/Cash.h
+++ b/src/10_PITF/Testat/Cash.h
@@ -7,6 +7,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/CashFactory.h b/src/10_PITF/Testat/CashFactory.h
index 14f429c..9c8165d 100644
--- a/src/10_PITF/Testat/CashFactory.h
+++ b/src/10_PITF/Testat/CashFactory.h
@@ -9,6 +9,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/Coin.h b/src/10_PITF/Testat/Coin.h
index 7e1b76f..0166b31 100644
--- a/src/10_PITF/Testat/Coin.h
+++ b/src/10_PITF/Testat/Coin.h
@@ -6,6 +6,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/Currency.h b/src/10_PITF/Testat/Currency.h
index 265d69a..6dd557c 100644
--- a/src/10_PITF/Testat/Currency.h
+++ b/src/10_PITF/Testat/Currency.h
@@ -5,6 +5,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/Money.h b/src/10_PITF/Testat/Money.h
index 786a181..bc960d2 100644
--- a/src/10_PITF/Testat/Money.h
+++ b/src/10_PITF/Testat/Money.h
@@ -5,6 +5,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {
 
diff --git a/src/10_PITF/Testat/Person.h b/src/10_PITF/Testat/Person.h
index fb70283..d00506c 100644
--- a/src/10_PITF/Testat/Person.h
+++ b/src/10_PITF/Testat/Person.h
@@ -8,6 +8,7 @@
 
 /**
  * @namespace banking
+ * \ingroup banking
  */
 namespace banking {