diff --git a/modules/pacman/cmd/pacman-tools/keeper.go b/modules/pacman/cmd/pacman-tools/keeper.go
index 92c1ee44..ece3640d 100644
--- a/modules/pacman/cmd/pacman-tools/keeper.go
+++ b/modules/pacman/cmd/pacman-tools/keeper.go
@@ -195,6 +195,10 @@ func (noRoot) Journal(unit string, n int) ([]string, error) {
 	return nil, errors.New("the root helper's client is not built in yet: no journal can be read")
 }
 
+func (noRoot) Maps() ([]Mapped, error) {
+	return nil, errors.New("the root helper's client is not built in yet: no process's maps can be read")
+}
+
 // Keeper is the module's process on one node.
 type Keeper struct {
 	Node    string