diff --git a/vlib/crypto/blake2b/blake2b.v b/vlib/crypto/blake2b/blake2b.v
index 2a98617f7fc0e7..2176684cac7188 100644
--- a/vlib/crypto/blake2b/blake2b.v
+++ b/vlib/crypto/blake2b/blake2b.v
@@ -145,7 +145,7 @@ fn (err InputBufferSizeError) msg() string {
 // new_digest creates an initialized digest structure based on
 // the hash size and whether or not you specify a MAC key.
 //
-// hash_size - the number if bytes in the generated hash.
+// hash_size - the number of bytes in the generated hash.
 //     Legal values are between 1 and 64.
 //
 // key - key used for generating a prefix MAC.  A zero length
diff --git a/vlib/crypto/blake2s/blake2s.v b/vlib/crypto/blake2s/blake2s.v
index 124dd320c4a7d0..de5b7b424d1ed4 100644
--- a/vlib/crypto/blake2s/blake2s.v
+++ b/vlib/crypto/blake2s/blake2s.v
@@ -144,7 +144,7 @@ fn (err InputBufferSizeError) msg() string {
 // new_digest creates an initialized digest structure based on
 // the hash size and whether or not you specify a MAC key.
 //
-// hash_size - the number if bytes in the generated hash.
+// hash_size - the number of bytes in the generated hash.
 //     Legal values are between 1 and 32.
 //
 // key - key used for generating a prefix MAC.  A zero length