diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+0.4.4 -> 0.4.5 (2015-06-18)
+
+ - IMAP: select command must quote the mailbox name
+   (see https://github.com/jtdaugherty/HaskellNet/issues/35)
+
 0.4.3 -> 0.4.4 (2015-04-11)
 --------------
 
diff --git a/HaskellNet.cabal b/HaskellNet.cabal
--- a/HaskellNet.cabal
+++ b/HaskellNet.cabal
@@ -4,7 +4,7 @@
                 SMTP, and IMAP protocols.  NOTE: this package will be
                 split into smaller, protocol-specific packages in the
                 future.
-Version:        0.4.4
+Version:        0.4.5
 Copyright:      (c) 2006 Jun Mukai
 Author:         Jun Mukai
 Maintainer:	Jonathan Daugherty <cygnus@foobox.com>,
diff --git a/src/Network/HaskellNet/IMAP.hs b/src/Network/HaskellNet/IMAP.hs
--- a/src/Network/HaskellNet/IMAP.hs
+++ b/src/Network/HaskellNet/IMAP.hs
@@ -244,8 +244,10 @@
 
 _select :: String -> IMAPConnection -> String -> IO ()
 _select cmd conn mboxName =
-    do mbox' <- sendCommand conn (cmd ++ mboxName) pSelect
+    do mbox' <- sendCommand conn (cmd ++ quoted mboxName) pSelect
        setMailboxInfo conn $ mbox' { _mailbox = mboxName }
+    where
+       quoted s = "\"" ++ s ++ "\""
 
 select :: IMAPConnection -> MailboxName -> IO ()
 select = _select "SELECT "