diff --git a/internal/registry/process.go b/internal/registry/process.go
index 72d29d1..256a5a9 100644
--- a/internal/registry/process.go
+++ b/internal/registry/process.go
@@ -33,7 +33,7 @@ func (b convertedProcess[T]) Set(r Repr) error {
 		return b.process.Set(t)
 	}
 
-	return fmt.Errorf("Incorrent format '%s' for engine '%s'.", r.Id(), b.inType)
+	return fmt.Errorf("Incorrent format '%s' for engine '%s'.", r.ID(), b.inType)
 }
 
 func (b convertedProcess[T]) Step(i int) bool {
diff --git a/internal/registry/registry.go b/internal/registry/registry.go
index 6fce6bf..9171ef5 100644
--- a/internal/registry/registry.go
+++ b/internal/registry/registry.go
@@ -44,7 +44,7 @@ func (r *Registry) GetDefaultEngine(id string) (Engine, error) {
 }
 
 func (r *Registry) ConvertTo(repr Repr, outType string) (Repr, error) {
-	path, err := r.ConversionPath(repr.Id(), outType)
+	path, err := r.ConversionPath(repr.ID(), outType)
 	if err != nil {
 		return nil, err
 	}
@@ -61,9 +61,9 @@ func (r *Registry) ConvertTo(repr Repr, outType string) (Repr, error) {
 }
 
 func (r *Registry) Marshal(repr Repr) (string, error) {
-	m, ok := r.marshalers[repr.Id()]
+	m, ok := r.marshalers[repr.ID()]
 	if !ok {
-		return "", fmt.Errorf("no marshaler for '%s'", repr.Id())
+		return "", fmt.Errorf("no marshaler for '%s'", repr.ID())
 	}
 
 	return m.Encode(repr)
diff --git a/internal/registry/repr.go b/internal/registry/repr.go
index a8dd19b..95f19ab 100644
--- a/internal/registry/repr.go
+++ b/internal/registry/repr.go
@@ -4,7 +4,7 @@ type Repr interface {
 	// Id returns to name of the objects underlying representation. If is
 	// assumed that if two Repr objects have the same Id(), they share the same
 	// representation.
-	Id() string
+	ID() string
 
 	Data() any
 }
@@ -14,7 +14,7 @@ type baseRepr struct {
 	data any
 }
 
-func (r baseRepr) Id() string { return r.id }
+func (r baseRepr) ID() string { return r.id }
 
 func (r baseRepr) Data() any { return r.data }