diff --git a/src/rspro/OCTET_STRING.c b/src/rspro/OCTET_STRING.c
index 3e424e7..6df9a0a 100644
--- a/src/rspro/OCTET_STRING.c
+++ b/src/rspro/OCTET_STRING.c
@@ -109,7 +109,7 @@
 /*
  * The main reason why ASN.1 is still alive is that too much time and effort
  * is necessary for learning it more or less adequately, thus creating a gut
- * necessity to demonstrate that aquired skill everywhere afterwards.
+ * necessity to demonstrate that acquired skill everywhere afterwards.
  * No, I am not going to explain what the following stuff is.
  */
 struct _stack_el {