diff --git a/cpu/cc2538/dbg.h b/cpu/cc2538/dbg.h
index d861cadd7..2e283c0b1 100644
--- a/cpu/cc2538/dbg.h
+++ b/cpu/cc2538/dbg.h
@@ -34,7 +34,7 @@
  *
  * \defgroup cc2538-char-io cc2538 Character I/O
  *
- * cc2538 CPU-specific functions for debugging and SLIP I/O
+ * CPU-specific functions for debugging and SLIP I/O
  *
  * On the cc2538, character I/O can be directed over USB or UART. This is
  * controlled by a series of configuration directives:
diff --git a/cpu/cc2538/dev/ioc.h b/cpu/cc2538/dev/ioc.h
index 34fcce809..7fad9d275 100644
--- a/cpu/cc2538/dev/ioc.h
+++ b/cpu/cc2538/dev/ioc.h
@@ -34,7 +34,7 @@
  *
  * \defgroup cc2538-ioc cc2538 I/O Control
  *
- * cc2538 I/O Control Module
+ * Driver for the cc2538 I/O Control Module
  * @{
  *
  * \file
diff --git a/cpu/cc2538/dev/scb.h b/cpu/cc2538/dev/scb.h
index 53b1535e4..e91951ecb 100644
--- a/cpu/cc2538/dev/scb.h
+++ b/cpu/cc2538/dev/scb.h
@@ -32,7 +32,9 @@
  * \addtogroup cc2538
  * @{
  *
- * \defgroup cc2538-scb cc2538 System Control Block
+ * \defgroup cc2538-scb cc2538 System Control Block (SCB)
+ *
+ * Offsets and bit definitions for SCB registers
  * @{
  *
  * \file
diff --git a/cpu/cc2538/dev/sys-ctrl.h b/cpu/cc2538/dev/sys-ctrl.h
index f63fd5a50..3c9885a89 100644
--- a/cpu/cc2538/dev/sys-ctrl.h
+++ b/cpu/cc2538/dev/sys-ctrl.h
@@ -32,7 +32,7 @@
  * \addtogroup cc2538
  * @{
  *
- * \defgroup cc2538-sys-ctrl cc2538 System Control
+ * \defgroup cc2538-sys-ctrl cc2538 System Control (SysCtrl)
  *
  * Driver for the cc2538 System Control Module
  * @{
diff --git a/platform/cc2538dk/contiki-main.c b/platform/cc2538dk/contiki-main.c
index 414d2aebb..4487a07f2 100644
--- a/platform/cc2538dk/contiki-main.c
+++ b/platform/cc2538dk/contiki-main.c
@@ -34,8 +34,8 @@
  *
  * \defgroup cc2538dk The cc2538 Development Kit platform
  *
- * The cc2538DK is the new platform by Texas Instruments, based on the
- * cc2530 SoC with an ARM Cortex-M3 core.
+ * The cc2538DK is a platform by Texas Instruments, based on the
+ * cc2538 SoC with an ARM Cortex-M3 core.
  * @{
  *
  * \file