diff --git a/internal/core/plugins/manager.go b/internal/core/plugins/manager.go
index f9358e7..28ff4e6 100644
--- a/internal/core/plugins/manager.go
+++ b/internal/core/plugins/manager.go
@@ -354,13 +354,12 @@ type NodeMeta struct {
 
 // Enable activates a plugin by name.
 // If the plugin has on_install hook, it must be installed first.
-// Plugins without on_install hook are always considered "installed".
 func (m *Manager) Enable(name string) error {
 	for i := range m.plugins {
 		if m.plugins[i].Meta.Name == name {
 			p := &m.plugins[i]
 			if p.HasInstall && !p.Installed {
-				return fmt.Errorf("plugin %q must be installed first (use Install)", name)
+				return fmt.Errorf("plugin %q must be installed first", name)
 			}
 			p.Active = true
 			return nil