BlockDevice -> []BlockDevice in CreateOpts
diff --git a/rackspace/compute/v2/bootfromvolume/delegate_test.go b/rackspace/compute/v2/bootfromvolume/delegate_test.go
index 794f0c8..0b53527 100644
--- a/rackspace/compute/v2/bootfromvolume/delegate_test.go
+++ b/rackspace/compute/v2/bootfromvolume/delegate_test.go
@@ -17,11 +17,13 @@
 
 	ext := osBFV.CreateOptsExt{
 		CreateOptsBuilder: base,
-		BlockDevice: osBFV.BlockDevice{
-			UUID:            "123456",
-			SourceType:      "image",
-			DestinationType: "volume",
-			VolumeSize:      10,
+		BlockDevice: []osBFV.BlockDevice{
+			osBFV.BlockDevice{
+				UUID:            "123456",
+				SourceType:      osBFV.Image,
+				DestinationType: "volume",
+				VolumeSize:      10,
+			},
 		},
 	}