diff --git a/src/kits/storage/disk_device/Partition.cpp b/src/kits/storage/disk_device/Partition.cpp
index 1baa1bec9e..5964a8ae5b 100644
--- a/src/kits/storage/disk_device/Partition.cpp
+++ b/src/kits/storage/disk_device/Partition.cpp
@@ -572,7 +572,7 @@ BPartition::Mount(const char* mountPoint, uint32 mountFlags,
 	if (device >= 0)
 		return Device()->Update();
 
-	return B_ERROR;
+	return device;
 }