diff --git a/builder/xenserver/iso/builder.go b/builder/xenserver/iso/builder.go
index 5ddd91a4..a78747ee 100644
--- a/builder/xenserver/iso/builder.go
+++ b/builder/xenserver/iso/builder.go
@@ -53,7 +53,8 @@ func (self *Builder) Prepare(raws ...interface{}) (params []string, retErr error
 	var errs *packer.MultiError
 
 	err := hconfig.Decode(&self.config, &hconfig.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &self.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{
 				"boot_command",
diff --git a/builder/xenserver/xva/builder.go b/builder/xenserver/xva/builder.go
index 278bef15..8cf2654f 100644
--- a/builder/xenserver/xva/builder.go
+++ b/builder/xenserver/xva/builder.go
@@ -38,7 +38,8 @@ func (self *Builder) Prepare(raws ...interface{}) (params []string, retErr error
 	var errs *packer.MultiError
 
 	err := hconfig.Decode(&self.config, &hconfig.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &self.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{
 				"boot_command",