diff --git a/cas/apiv1/services.go b/cas/apiv1/services.go
index f10a3e17..bca24d96 100644
--- a/cas/apiv1/services.go
+++ b/cas/apiv1/services.go
@@ -70,7 +70,7 @@ type NotImplementedError struct {
 	Message string
 }
 
-// NotImplementedError implements the error interface.
+// Error implements the error interface.
 func (e NotImplementedError) Error() string {
 	if e.Message != "" {
 		return e.Message