diff --git a/src/comp/driver/rustc.rs b/src/comp/driver/rustc.rs
index ef357281d9c5..abcaa07241d6 100644
--- a/src/comp/driver/rustc.rs
+++ b/src/comp/driver/rustc.rs
@@ -407,7 +407,7 @@ fn main(vec[str] args) {
         alt (sess.get_targ_cfg().os) {
             case (session::os_win32) {
                 shared_cmd = "-shared";
-                gcc_args = common_args + ["-march=i686", "-O2"];
+                gcc_args = common_args + ["-march=i686", "-O2", "-lssp"];
             }
             case (session::os_macos) {
                 shared_cmd = "-dynamiclib";