diff --git a/headers/private/package/packagefs.h b/headers/private/package/packagefs.h
index 8768e6c0ef..3737eee821 100644
--- a/headers/private/package/packagefs.h
+++ b/headers/private/package/packagefs.h
@@ -16,7 +16,9 @@ enum PackageFSMountType {
 	PACKAGE_FS_MOUNT_TYPE_SYSTEM,
 	PACKAGE_FS_MOUNT_TYPE_COMMON,
 	PACKAGE_FS_MOUNT_TYPE_HOME,
-	PACKAGE_FS_MOUNT_TYPE_CUSTOM
+	PACKAGE_FS_MOUNT_TYPE_CUSTOM,
+
+	PACKAGE_FS_MOUNT_TYPE_ENUM_COUNT
 };
 
 
diff --git a/src/add-ons/kernel/file_systems/packagefs/Volume.cpp b/src/add-ons/kernel/file_systems/packagefs/Volume.cpp
index 8fdc491b01..6f9f788442 100644
--- a/src/add-ons/kernel/file_systems/packagefs/Volume.cpp
+++ b/src/add-ons/kernel/file_systems/packagefs/Volume.cpp
@@ -1654,6 +1654,8 @@ Volume::_CreateShineThroughDirectories(const char* shineThroughSetting)
 				break;
 			case PACKAGE_FS_MOUNT_TYPE_CUSTOM:
 				return B_OK;
+			case PACKAGE_FS_MOUNT_TYPE_ENUM_COUNT:
+				return B_BAD_VALUE;
 		}
 	} else if (strcmp(shineThroughSetting, "system") == 0)
 		directories = kSystemShineThroughDirectories;