@@ -863,7 +863,7 @@ func (s *Server) postImagesLoad(version version.Version, w http.ResponseWriter,

 func (s *Server) postContainersCreate(version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {

 	if err := parseForm(r); err != nil {

-		return nil

+		return err

 	}

 	if err := checkForJson(r); err != nil {

 		return err

@@ -1288,7 +1288,7 @@ func (s *Server) postContainersCopy(version version.Version, w http.ResponseWrit

 func (s *Server) postContainerExecCreate(version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {

 	if err := parseForm(r); err != nil {

-		return nil

+		return err

 	}

 	name := vars["name"]

@@ -1317,7 +1317,7 @@ func (s *Server) postContainerExecCreate(version version.Version, w http.Respons

 // TODO(vishh): Refactor the code to avoid having to specify stream config as part of both create and start.

 func (s *Server) postContainerExecStart(version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {

 	if err := parseForm(r); err != nil {

-		return nil

+		return err

 	}

 	var (

 		execName = vars["name"]