diff --git a/device.go b/device.go
index d41007b8..82ee9450 100644
--- a/device.go
+++ b/device.go
@@ -9,7 +9,6 @@ type device struct {
 	Interval string `json:"-"`
 	Robot    *Robot `json:"-"`
 	Driver   DriverInterface
-	Params   map[string]string `json:"-"`
 }
 
 type Device interface {
diff --git a/driver.go b/driver.go
index 238fac25..df559e25 100644
--- a/driver.go
+++ b/driver.go
@@ -4,7 +4,6 @@ type Driver struct {
 	Interval string
 	Pin      string
 	Name     string
-	Params   map[string]string
 	Commands []string
 	Events   map[string]chan interface{} `json:"-"`
 }