diff --git a/cpu/esp32/include/cpu_conf.h b/cpu/esp32/include/cpu_conf.h
index 9580faa817add4239597891a44def1067964dee6..3d04a391c745a286fca2cb2d9210dbe32ad87911 100644
--- a/cpu/esp32/include/cpu_conf.h
+++ b/cpu/esp32/include/cpu_conf.h
@@ -7,7 +7,10 @@
  */
 
 /**
+ * @defgroup    cpu_esp32_conf ESP32 compile configurations
  * @ingroup     cpu_esp32
+ * @ingroup     config
+ * @brief       Compile-time configuration macros for ESP32 modules
  * @{
  *
  * @file
@@ -29,7 +32,7 @@ extern "C" {
 #endif
 
 /**
- * @brief   Stack size configuration
+ * @name   Stack size configuration
  * @{
  */
 #define THREAD_EXTRA_STACKSIZE_PRINTF (1024)
diff --git a/cpu/esp8266/include/cpu_conf.h b/cpu/esp8266/include/cpu_conf.h
index 7623e9b8e2fae30d326761705c5ec957ed5d635e..3c29e86f66b9f3c7140c7cc6da89d34458dc04de 100644
--- a/cpu/esp8266/include/cpu_conf.h
+++ b/cpu/esp8266/include/cpu_conf.h
@@ -7,7 +7,10 @@
  */
 
 /**
+ * @defgroup    cpu_esp8266_conf ESP8266 compile configurations
  * @ingroup     cpu_esp8266
+ * @ingroup     config
+ * @brief       Compile-time configuration macros for ESP8266 modules
  * @{
  *
  * @file