diff --git a/libcacard/vscard_common.h b/libcacard/vscard_common.h
index bebd52db17d7ecdf2c52d6d5623401dfa7044ed3..609ae98bcf11c0fe4635800dbbb8ea10d89cfca0 100644
--- a/libcacard/vscard_common.h
+++ b/libcacard/vscard_common.h
@@ -153,7 +153,7 @@ typedef struct VSCMsgCardRemove {
 
 /*
  * VSCMsgAPDU               Client <-> Host
- * Main reason of existance. Transfer a single APDU in either direction.
+ * Main reason of existence. Transfer a single APDU in either direction.
  */
 typedef struct VSCMsgAPDU {
     uint8_t    data[0];