diff --git a/pkg/morph/client/client.go b/pkg/morph/client/client.go
index de29d0c0..6a7a5b51 100644
--- a/pkg/morph/client/client.go
+++ b/pkg/morph/client/client.go
@@ -90,7 +90,7 @@ type cache struct {
 	txHeights *lru.Cache[util.Uint256, uint32]
 }
 
-func (c cache) nns() *util.Uint160 {
+func (c *cache) nns() *util.Uint160 {
 	c.m.RLock()
 	defer c.m.RUnlock()
 
@@ -104,7 +104,7 @@ func (c *cache) setNNSHash(nnsHash util.Uint160) {
 	c.nnsHash = &nnsHash
 }
 
-func (c cache) groupKey() *keys.PublicKey {
+func (c *cache) groupKey() *keys.PublicKey {
 	c.m.RLock()
 	defer c.m.RUnlock()