diff --git a/include/openssl/evp.h b/include/openssl/evp.h
index 43180f2..2df8513 100644
--- a/include/openssl/evp.h
+++ b/include/openssl/evp.h
@@ -495,7 +495,7 @@
 // as described below.
 //
 // |N|, |r|, and |p| are as described in RFC 7914 section 6. They determine the
-// cost of the operation. If |max_mem| is zero, a defult limit of 32MiB will be
+// cost of the operation. If |max_mem| is zero, a default limit of 32MiB will be
 // used.
 //
 // The parameters are considered invalid under any of the following conditions: