diff --git a/lib/rtc_dcf77.c b/lib/rtc_dcf77.c
index 6352e80..1a8f79f 100644
--- a/lib/rtc_dcf77.c
+++ b/lib/rtc_dcf77.c
@@ -12,7 +12,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-/** @brief library to get time from a DCF77 module
+/** @brief library to get time from a DCF77 module (code)
  *  @file rtc_dcf77.c
  *  @author King Kévin <kingkevin@cuvoodoo.info>
  *  @date 2016
diff --git a/lib/rtc_dcf77.h b/lib/rtc_dcf77.h
index a8c55c4..edc42c3 100644
--- a/lib/rtc_dcf77.h
+++ b/lib/rtc_dcf77.h
@@ -12,7 +12,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-/** @brief library to get time from a DCF77 module
+/** @brief library to get time from a DCF77 module (API)
  *  @file rtc_dcf77.h
  *  @author King Kévin <kingkevin@cuvoodoo.info>
  *  @date 2016