diff --git a/builder/osc/bsuvolume/builder.go b/builder/osc/bsuvolume/builder.go
index 348e9d66a..914fea983 100644
--- a/builder/osc/bsuvolume/builder.go
+++ b/builder/osc/bsuvolume/builder.go
@@ -26,7 +26,7 @@ type Config struct {
 	osccommon.AccessConfig `mapstructure:",squash"`
 	osccommon.RunConfig    `mapstructure:",squash"`
 
-	VolumeMappings []BlockDevice `mapstructure:"ebs_volumes"`
+	VolumeMappings []BlockDevice `mapstructure:"bsu_volumes"`
 
 	launchBlockDevices osccommon.BlockDevices
 	ctx                interpolate.Context
diff --git a/builder/osc/bsuvolume/builder_acc_test.go b/builder/osc/bsuvolume/builder_acc_test.go
index ef4e46cde..835ff9ba3 100644
--- a/builder/osc/bsuvolume/builder_acc_test.go
+++ b/builder/osc/bsuvolume/builder_acc_test.go
@@ -48,7 +48,7 @@ const testBuilderAccBasic = `
             "vm_type": "t2.micro",
             "source_omi": "ami-65efcc11",
             "ssh_username": "outscale",
-            "ebs_volumes": [
+            "bsu_volumes": [
                 {
                     "volume_type": "gp2",
                     "device_name": "/dev/xvdf",