diff --git a/sysmoOCTSIM/hal/include/hpl_spi_s_sync.h b/sysmoOCTSIM/hal/include/hpl_spi_s_sync.h
index 4fda095..ff4c811 100644
--- a/sysmoOCTSIM/hal/include/hpl_spi_s_sync.h
+++ b/sysmoOCTSIM/hal/include/hpl_spi_s_sync.h
@@ -46,10 +46,14 @@
 extern "C" {
 #endif
 
-/** Uses common SPI async device driver. */
+/** Uses common SPI sync device driver. */
 #define _spi_s_sync_dev _spi_sync_dev
 
 /**
+ * \name HPL functions
+ */
+//@{
+/**
  *  \brief Initialize SPI for access without interrupts
  *  It will load default hardware configuration and software struct.
  *  \param[in, out] dev Pointer to the SPI device instance.
@@ -218,6 +222,7 @@
  * \retval false Error not detected
  */
 bool _spi_s_sync_is_error(struct _spi_s_sync_dev *dev);
+//@}
 
 #ifdef __cplusplus
 }