diff --git a/src/common/ftp.cpp b/src/common/ftp.cpp
index 0973522a46..dc159f5571 100644
--- a/src/common/ftp.cpp
+++ b/src/common/ftp.cpp
@@ -769,7 +769,11 @@ wxInputStream *wxFTP::GetInputStream(const wxString& path)
 
     wxString tmp_str = wxT("RETR ") + wxURI::Unescape(path);
     if ( !CheckCommand(tmp_str, '1') )
+    {
+        delete sock;
+
         return NULL;
+    }
 
     sock = AcceptIfActive(sock);
     if ( !sock )
@@ -800,7 +804,11 @@ wxOutputStream *wxFTP::GetOutputStream(const wxString& path)
 
     wxString tmp_str = wxT("STOR ") + path;
     if ( !CheckCommand(tmp_str, '1') )
+    {
+        delete sock;
+
         return NULL;
+    }
 
     sock = AcceptIfActive(sock);