diff --git a/src/librustc_driver/driver.rs b/src/librustc_driver/driver.rs
index c8d0425dfc5a..ba9bf4bac7d4 100644
--- a/src/librustc_driver/driver.rs
+++ b/src/librustc_driver/driver.rs
@@ -881,7 +881,7 @@ pub fn phase_6_link_output(sess: &Session,
 fn escape_dep_filename(filename: &str) -> String {
     // Apparently clang and gcc *only* escape spaces:
     // http://llvm.org/klaus/clang/commit/9d50634cfc268ecc9a7250226dd5ca0e945240d4
-    filename.replace(" ", "\")
+    filename.replace(" ", "\\ ")
 }
 
 fn write_out_deps(sess: &Session, outputs: &OutputFilenames, id: &str) {