--- a/src/conv.rs	Sun Feb 26 12:16:03 2017 +0100
+++ b/src/conv.rs	Sat Sep 23 14:30:18 2017 -0600
@@ -2,7 +2,7 @@
 use std::ptr;
 use std::ffi::{CStr, CString};
 
-use constants;
+use constants::PamResultCode;
 use constants::*;
 use module::{PamItem, PamResult};
 
@@ -61,7 +61,7 @@
 
         let ret = (self.conv)(1, &&msg, &mut resp_ptr, self.appdata_ptr);
 
-        if constants::PAM_SUCCESS == ret {
+        if PamResultCode::PAM_SUCCESS == ret {
             if resp_ptr.is_null() {
                 Ok(None)
             } else {