diff --git a/lib/swd.h b/lib/swd.h
index 097dfcd..a14d9ad 100644
--- a/lib/swd.h
+++ b/lib/swd.h
@@ -87,7 +87,7 @@ enum swd_activation_code_e {
 /** setup SWD peripheral
  */
 void swd_setup(uint32_t freq);
-/** release 1-wire peripheral
+/** release peripherals used for SWD communication
  */
 void swd_release(void);
 /** release used pins */