diff --git a/manager/api/endpoint_test.go b/manager/api/endpoint_test.go
index 4fe81c89..9d3a5afe 100644
--- a/manager/api/endpoint_test.go
+++ b/manager/api/endpoint_test.go
@@ -17,7 +17,7 @@ import (
 )
 
 const (
-	contentType  = "application/json; charset=utf-8"
+	contentType  = "application/json"
 	invalidEmail = "userexample.com"
 	wrongID      = "123e4567-e89b-12d3-a456-000000000042"
 	id           = "123e4567-e89b-12d3-a456-000000000001"
diff --git a/manager/api/responses.go b/manager/api/responses.go
index 8321b1e8..416cdecb 100644
--- a/manager/api/responses.go
+++ b/manager/api/responses.go
@@ -7,8 +7,6 @@ import (
 	"github.com/mainflux/mainflux/manager"
 )
 
-const contentType = "application/json; charset=utf-8"
-
 type apiRes interface {
 	code() int
 	headers() map[string]string
diff --git a/manager/api/transport.go b/manager/api/transport.go
index 227a3b8f..63a76f62 100644
--- a/manager/api/transport.go
+++ b/manager/api/transport.go
@@ -16,8 +16,12 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
-var errUnsupportedContentType = errors.New("unsupported content type")
-var errInvalidQueryParams = errors.New("invalid query params")
+const contentType = "application/json"
+
+var (
+	errUnsupportedContentType = errors.New("unsupported content type")
+	errInvalidQueryParams     = errors.New("invalid query params")
+)
 
 // MakeHandler returns a HTTP handler for API endpoints.
 func MakeHandler(svc manager.Service) http.Handler {
diff --git a/version.go b/version.go
index 2ac660ef..a7996623 100644
--- a/version.go
+++ b/version.go
@@ -5,7 +5,7 @@ import (
 	"net/http"
 )
 
-const version string = "0.2.0"
+const version string = "0.2.1"
 
 type response struct {
 	Version string