diff --git a/headers/private/storage/DiskScannerAddOn.h b/headers/private/storage/DiskScannerAddOn.h
index 3f8fc3e2ab..ce7ff57edd 100644
--- a/headers/private/storage/DiskScannerAddOn.h
+++ b/headers/private/storage/DiskScannerAddOn.h
@@ -11,6 +11,7 @@ class BDiskScannerParameterEditor;
 class BPartition;
 class BSession;
 class BString;
+class BView;
 
 // BDiskScannerPartitionAddOn
 class BDiskScannerPartitionAddOn {