diff --git a/cpu/arm/aducrf101/Common/system_ADuCRF101.h b/cpu/arm/aducrf101/Common/system_ADuCRF101.h
index c8b5c3210..4e6532215 100644
--- a/cpu/arm/aducrf101/Common/system_ADuCRF101.h
+++ b/cpu/arm/aducrf101/Common/system_ADuCRF101.h
@@ -41,14 +41,6 @@
 **/
 
 
-/** @addtogroup CMSIS
-  * @{
-  */
-
-/** @addtogroup aducrf101_system
-  * @{
-  */  
-
 #ifndef __SYSTEM_ADUCRF101_H__
 #define __SYSTEM_ADUCRF101_H__
 
@@ -106,11 +98,3 @@ extern uint32_t GetSystemExtClkFreq (void);
 
 #endif /* __SYSTEM_ADUCRF101_H__ */
 
-/**
-  * @}
-  */
-  
-/**
-  * @}
-  */  
-