diff --git a/prometheus/registry.go b/prometheus/registry.go
index 8c6b5bd..34aa3b3 100644
--- a/prometheus/registry.go
+++ b/prometheus/registry.go
@@ -80,7 +80,7 @@ func NewPedanticRegistry() *Registry {
 
 // Registerer is the interface for the part of a registry in charge of
 // registering and unregistering. Users of custom registries should use
-// Registerer as type for registration purposes (rather then the Registry type
+// Registerer as type for registration purposes (rather than the Registry type
 // directly). In that way, they are free to use custom Registerer implementation
 // (e.g. for testing purposes).
 type Registerer interface {