diff --git a/lib/Frontend/InitHeaderSearch.cpp b/lib/Frontend/InitHeaderSearch.cpp
index 2e0b4bd..34cb9ec 100644
--- a/lib/Frontend/InitHeaderSearch.cpp
+++ b/lib/Frontend/InitHeaderSearch.cpp
@@ -489,8 +489,10 @@
     AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.3",
                                 "i686-pc-linux-gnu", "", "", triple);
     // Debian sid
-    AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.2",
+    AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4",
                                 "x86_64-linux-gnu", "32", "", triple);
+    AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4",
+                                "i486-linux-gnu", "64", "", triple);
     // Ubuntu 7.10 - Gutsy Gibbon
     AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.1.3",
                                 "i486-linux-gnu", "", "", triple);