diff --git a/sys/opencrypto/cast.c b/sys/opencrypto/cast.c
index 7474b3681f87..53fec76c4692 100644
--- a/sys/opencrypto/cast.c
+++ b/sys/opencrypto/cast.c
@@ -127,7 +127,7 @@ u_int32_t t, l, r;
 }
 
 
-/***** Key Schedual *****/
+/***** Key Schedule *****/
 
 void cast_setkey(cast_key* key, u_int8_t* rawkey, int keybytes)
 {
diff --git a/sys/opencrypto/crypto.c b/sys/opencrypto/crypto.c
index d084b7775d08..44fbdf8fd7a6 100644
--- a/sys/opencrypto/crypto.c
+++ b/sys/opencrypto/crypto.c
@@ -911,7 +911,7 @@ again:
 }
 
 /*
- * Dispatch an assymetric crypto request.
+ * Dispatch an asymmetric crypto request.
  */
 static int
 crypto_kinvoke(struct cryptkop *krp, int crid)
diff --git a/sys/opencrypto/gfmult.c b/sys/opencrypto/gfmult.c
index 990a7ff5d60f..b34af26790f0 100644
--- a/sys/opencrypto/gfmult.c
+++ b/sys/opencrypto/gfmult.c
@@ -40,7 +40,7 @@ static const uint8_t nib_rev[] = {
 	0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf,
 };
 
-/* calulate v * 2 */
+/* calculate v * 2 */
 static inline struct gf128
 gf128_mulalpha(struct gf128 v)
 {