diff --git a/pkg/interop/asset/asset.go b/pkg/interop/asset/asset.go
index a7a46db97..3c84ea367 100644
--- a/pkg/interop/asset/asset.go
+++ b/pkg/interop/asset/asset.go
@@ -49,5 +49,5 @@ func GetIssuer(a Asset) []byte {
 // Create registers a new asset on the blockchain.
 func Create(assetType byte, name string, amount int, precision byte, owner, admin, issuer []byte) {}
 
-// Renew renews the existance of an asset by the given years.
+// Renew renews the existence of an asset by the given years.
 func Renew(asset Asset, years int) {}
diff --git a/pkg/util/uint160.go b/pkg/util/uint160.go
index 6da50850e..996bd9334 100644
--- a/pkg/util/uint160.go
+++ b/pkg/util/uint160.go
@@ -70,7 +70,7 @@ func (u *Uint160) UnmarshalJSON(data []byte) (err error) {
 	return err
 }
 
-// Size returns the lenght of the bytes representation of Uint160
+// Size returns the length of the bytes representation of Uint160
 func (u Uint160) Size() int {
 	return uint160Size
 }
diff --git a/pkg/util/uint256.go b/pkg/util/uint256.go
index fbf9a41a1..0dbad3f89 100644
--- a/pkg/util/uint256.go
+++ b/pkg/util/uint256.go
@@ -82,7 +82,7 @@ func (u *Uint256) UnmarshalJSON(data []byte) (err error) {
 	return err
 }
 
-// Size returns the lenght of the bytes representation of Uint256
+// Size returns the length of the bytes representation of Uint256
 func (u Uint256) Size() int {
 	return uint256Size
 }