diff --git a/client/httpapi/response.go b/client/httpapi/response.go
index 624a488d7..339c73658 100644
--- a/client/httpapi/response.go
+++ b/client/httpapi/response.go
@@ -102,7 +102,7 @@ func (r *Request) Send(c *http.Client) (*Response, error) {
 
 	if fr, ok := r.Body.(*files.MultiFileReader); ok {
 		req.Header.Set("Content-Type", "multipart/form-data; boundary="+fr.Boundary())
-		req.Header.Set("Content-Disposition", "form-data: name=\"files\"")
+		req.Header.Set("Content-Disposition", "form-data; name=\"files\"")
 	}
 
 	resp, err := c.Do(req)