diff --git a/doc/modules b/doc/modules
index f58e8f671..4c2f1d375 100644
--- a/doc/modules
+++ b/doc/modules
@@ -52,6 +52,6 @@
  *    - a UDP and a TCP implementation
  *    
  * @defgroup applications Applications
- *
- * @defgroup mobility Mobility
+ *    
+ * @defgroup netanim Animation
  */
diff --git a/src/mobility/model/mobility.h b/src/mobility/model/mobility.h
index e09b6d4db..04f69eeb4 100644
--- a/src/mobility/model/mobility.h
+++ b/src/mobility/model/mobility.h
@@ -1,3 +1,7 @@
+/**
+ * @defgroup mobility Mobility
+ */
+
 /**
  * \addtogroup mobility Mobility
  *
diff --git a/src/netanim/model/animation-interface.h b/src/netanim/model/animation-interface.h
index d736d71e1..4b9bde032 100644
--- a/src/netanim/model/animation-interface.h
+++ b/src/netanim/model/animation-interface.h
@@ -32,11 +32,6 @@
 
 namespace ns3 {
 
-/**
- * \defgroup netanim Animation
- *
- */
-
 class NetModel;
 
 /**