diff --git a/pkg/innerring/alphabet.go b/pkg/innerring/alphabet.go
index c649090eeb..b5f2c2a1c6 100644
--- a/pkg/innerring/alphabet.go
+++ b/pkg/innerring/alphabet.go
@@ -2,10 +2,10 @@ package innerring
 
 import "github.com/nspcc-dev/neo-go/pkg/util"
 
-type glagoliticLetter int8
+type GlagoliticLetter int8
 
 const (
-	_ glagoliticLetter = iota - 1
+	_ GlagoliticLetter = iota - 1
 
 	az
 	buky
@@ -53,7 +53,7 @@ const (
 )
 
 // returns string in config-compatible format
-func (l glagoliticLetter) configString() string {
+func (l GlagoliticLetter) String() string {
 	switch l {
 	default:
 		return "unknown"
@@ -142,10 +142,10 @@ func (l glagoliticLetter) configString() string {
 	}
 }
 
-type alphabetContracts map[glagoliticLetter]util.Uint160
+type alphabetContracts map[GlagoliticLetter]util.Uint160
 
 func newAlphabetContracts() alphabetContracts {
-	return make(map[glagoliticLetter]util.Uint160, lastLetterNum)
+	return make(map[GlagoliticLetter]util.Uint160, lastLetterNum)
 }
 
 func (a alphabetContracts) GetByIndex(ind int) (util.Uint160, bool) {
@@ -153,7 +153,7 @@ func (a alphabetContracts) GetByIndex(ind int) (util.Uint160, bool) {
 		return util.Uint160{}, false
 	}
 
-	contract, ok := a[glagoliticLetter(ind)]
+	contract, ok := a[GlagoliticLetter(ind)]
 
 	return contract, ok
 }
@@ -162,12 +162,12 @@ func (a alphabetContracts) indexOutOfRange(ind int) bool {
 	return ind < 0 && ind >= len(a)
 }
 
-func (a alphabetContracts) iterate(f func(glagoliticLetter, util.Uint160)) {
+func (a alphabetContracts) iterate(f func(GlagoliticLetter, util.Uint160)) {
 	for letter, contract := range a {
 		f(letter, contract)
 	}
 }
 
-func (a *alphabetContracts) set(l glagoliticLetter, h util.Uint160) {
+func (a *alphabetContracts) set(l GlagoliticLetter, h util.Uint160) {
 	(*a)[l] = h
 }
diff --git a/pkg/innerring/innerring.go b/pkg/innerring/innerring.go
index 9c92c44172..5a945a9101 100644
--- a/pkg/innerring/innerring.go
+++ b/pkg/innerring/innerring.go
@@ -921,7 +921,7 @@ func ParsePublicKeysFromStrings(pubKeys []string) (keys.PublicKeys, error) {
 }
 
 func parseAlphabetContracts(cfg *viper.Viper) (alphabetContracts, error) {
-	num := glagoliticLetter(cfg.GetUint("contracts.alphabet.amount"))
+	num := GlagoliticLetter(cfg.GetUint("contracts.alphabet.amount"))
 	alpha := newAlphabetContracts()
 
 	if num > lastLetterNum {
@@ -929,11 +929,11 @@ func parseAlphabetContracts(cfg *viper.Viper) (alphabetContracts, error) {
 	}
 
 	for letter := az; letter < num; letter++ {
-		contractStr := cfg.GetString("contracts.alphabet." + letter.configString())
+		contractStr := cfg.GetString("contracts.alphabet." + letter.String())
 
 		contractHash, err := util.Uint160DecodeStringLE(contractStr)
 		if err != nil {
-			return nil, fmt.Errorf("invalid alphabet %s contract: %s: %w", letter.configString(), contractStr, err)
+			return nil, fmt.Errorf("invalid alphabet %s contract: %s: %w", letter.String(), contractStr, err)
 		}
 
 		alpha.set(letter, contractHash)
diff --git a/pkg/innerring/state.go b/pkg/innerring/state.go
index abe90cb5b4..e74ccd327e 100644
--- a/pkg/innerring/state.go
+++ b/pkg/innerring/state.go
@@ -85,7 +85,7 @@ func (s *Server) voteForSidechainValidator(validators keys.PublicKeys) error {
 
 	epoch := s.EpochCounter()
 
-	s.contracts.alphabet.iterate(func(letter glagoliticLetter, contract util.Uint160) {
+	s.contracts.alphabet.iterate(func(letter GlagoliticLetter, contract util.Uint160) {
 		err := s.morphClient.NotaryInvoke(contract, s.feeConfig.SideChainFee(), voteMethod, int64(epoch), validators)
 		if err != nil {
 			s.log.Warn("can't invoke vote method in alphabet contract",