diff --git a/lxd/storage/pool_interface.go b/lxd/storage/pool_interface.go
index <HASH>..<HASH> 100644
--- a/lxd/storage/pool_interface.go
+++ b/lxd/storage/pool_interface.go
@@ -91,7 +91,7 @@ type Pool interface {
 	GetCustomVolumeUsage(projectName string, volName string) (int64, error)
 	MountCustomVolume(projectName string, volName string, op *operations.Operation) error
 	UnmountCustomVolume(projectName string, volName string, op *operations.Operation) (bool, error)
-	ImportCustomVolume(projectName string, poolVol backup.Config, op *operations.Operation) error
+	ImportCustomVolume(projectName string, poolVol *backup.Config, op *operations.Operation) error
 	RefreshCustomVolume(projectName string, srcProjectName string, volName, desc string, config map[string]string, srcPoolName, srcVolName string, snapshots bool, op *operations.Operation) error
 
 	// Custom volume snapshots.
lxd/storage/pool/interface: Update ImportCustomVolume signature