diff --git a/os/rt/src/chvt.c b/os/rt/src/chvt.c
index d5591cc1b..7366195e4 100644
--- a/os/rt/src/chvt.c
+++ b/os/rt/src/chvt.c
@@ -91,7 +91,7 @@
 /**
  * @brief   Delta list compression.
  *
- * @param[in] vtpl      pointer to the delta list to be compressed
+ * @param[in] vtlp      pointer to the delta list to be compressed
  * @param[in] deltanow  interval to be compacted starting from "lasttime"
  *
  * @notapi