diff --git a/config/fcos/v1_6_exp/schema.go b/config/fcos/v1_6_exp/schema.go
index 4782342f..d4ae3af3 100644
--- a/config/fcos/v1_6_exp/schema.go
+++ b/config/fcos/v1_6_exp/schema.go
@@ -20,9 +20,9 @@ import (
 
 type Config struct {
 	base.Config   `yaml:",inline"`
-	BootDevice    BootDevice    `yaml:"boot_device"`
-	Grub          Grub          `yaml:"grub"`
-	SelinuxModule SelinuxModule `yaml:"selinux_module"`
+	BootDevice    BootDevice      `yaml:"boot_device"`
+	Grub          Grub            `yaml:"grub"`
+	SelinuxModule []SelinuxModule `yaml:"selinux_module"`
 }
 
 type BootDevice struct {