diff --git a/phpseclib/Net/SCP.php b/phpseclib/Net/SCP.php
index 2796a355..8fae6e6d 100644
--- a/phpseclib/Net/SCP.php
+++ b/phpseclib/Net/SCP.php
@@ -170,7 +170,7 @@ class Net_SCP
             return false;
         }
 
-        if (!$this->ssh->exec('scp -t ' . $remote_file, false)) { // -t = to
+        if (!$this->ssh->exec('scp -t "' . $remote_file . '"', false)) { // -t = to
             return false;
         }
 
@@ -245,7 +245,7 @@ class Net_SCP
             return false;
         }
 
-        if (!$this->ssh->exec('scp -f ' . $remote_file, false)) { // -f = from
+        if (!$this->ssh->exec('scp -f "' . $remote_file . '"', false)) { // -f = from
             return false;
         }