diff --git a/node_modules/c9/ssh.js b/node_modules/c9/ssh.js
index 7d8f7917..833b9365 100644
--- a/node_modules/c9/ssh.js
+++ b/node_modules/c9/ssh.js
@@ -18,6 +18,7 @@ exports.buildArgs = function(prvkeyFile, host) {
         "-o", "IdentityFile=" + prvkeyFile,
         "-o", "UserKnownHostsFile=/dev/null",
         "-o", "StrictHostKeyChecking=no",
+        "-o", "IdentitiesOnly=yes",
         "-F", "/dev/null", // use empty config file to not depend on local settings
         // force pseudo terminal to make sure that the remote process is killed
         // when the local ssh process is killed
@@ -148,9 +149,9 @@ exports.generateKeyPair = function(email, callback) {
 
 exports.validateSSHKey = function(prvkey, host, callback) {
     exports.exec(prvkey, host, "", [], function(err, stdout, stderr) {
-        // console.log("out >> " + stdout);
-        // console.log("err >> " + stderr);
-        // console.log(err);
+        debug("out >> " + stdout);
+        debug("err >> " + stderr);
+        debug(err);
         callback(null, !stderr.match(/Permission denied \(.*publickey/));
     });
 };