diff --git a/sv/git.go b/sv/git.go
index 709d336..b126b31 100644
--- a/sv/git.go
+++ b/sv/git.go
@@ -13,10 +13,13 @@ import (
 )
 
 const (
-	logSeparator       = "##"
-	endLine            = "~~"
-	breakingChangesKey = "breakingchange"
-	issueIDKey         = "issueid"
+	logSeparator = "##"
+	endLine      = "~~"
+
+	// BreakingChangesKey key to breaking change metadata
+	BreakingChangesKey = "breakingchange"
+	// IssueIDKey key to issue id metadata
+	IssueIDKey = "issueid"
 )
 
 // Git commands
@@ -52,7 +55,7 @@ type GitImpl struct {
 // NewGit constructor
 func NewGit(breakinChangePrefixes, issueIDPrefixes []string, tagPattern string) *GitImpl {
 	return &GitImpl{
-		messageMetadata: map[string][]string{breakingChangesKey: breakinChangePrefixes, issueIDKey: issueIDPrefixes},
+		messageMetadata: map[string][]string{BreakingChangesKey: breakinChangePrefixes, IssueIDKey: issueIDPrefixes},
 		tagPattern:      tagPattern,
 	}
 }
diff --git a/sv/releasenotes.go b/sv/releasenotes.go
index 5389f1f..8b7ed08 100644
--- a/sv/releasenotes.go
+++ b/sv/releasenotes.go
@@ -62,7 +62,7 @@ func (p ReleaseNoteProcessorImpl) Create(version semver.Version, date time.Time,
 			section.Items = append(section.Items, commit)
 			sections[commit.Type] = section
 		}
-		if value, exists := commit.Metadata[BreakingChangeTag]; exists {
+		if value, exists := commit.Metadata[BreakingChangesKey]; exists {
 			breakingChanges = append(breakingChanges, value)
 		}
 	}
diff --git a/sv/semver.go b/sv/semver.go
index 1c0523c..8350bda 100644
--- a/sv/semver.go
+++ b/sv/semver.go
@@ -24,9 +24,6 @@ func ToVersion(value string) (semver.Version, error) {
 	return *v, nil
 }
 
-// BreakingChangeTag breaking change tag from commit metadata
-const BreakingChangeTag string = "breakingchange"
-
 // SemVerCommitsProcessor interface
 type SemVerCommitsProcessor interface {
 	NextVersion(version semver.Version, commits []GitCommitLog) semver.Version
@@ -72,7 +69,7 @@ func (p SemVerCommitsProcessorImpl) NextVersion(version semver.Version, commits
 }
 
 func (p SemVerCommitsProcessorImpl) versionTypeToUpdate(commit GitCommitLog) versionType {
-	if _, exists := commit.Metadata[BreakingChangeTag]; exists {
+	if _, exists := commit.Metadata[BreakingChangesKey]; exists {
 		return major
 	}
 	if _, exists := p.MajorVersionTypes[commit.Type]; exists {