diff --git a/src/who/who.rs b/src/who/who.rs
index 3f5fa402d..29a6e7ee5 100644
--- a/src/who/who.rs
+++ b/src/who/who.rs
@@ -441,7 +441,7 @@ impl Who {
 
         let mut buf = vec![];
         let ut_host = ut.host();
-        let mut res = ut_host.split(':');
+        let mut res = ut_host.splitn(2, ':');
         if let Some(h) = res.next() {
             if self.do_lookup {
                 buf.push(ut.canon_host().unwrap_or(h.to_owned()));