diff --git a/lib/Frontend/CompilerInstance.cpp b/lib/Frontend/CompilerInstance.cpp
index 6a060e0..d3d33e6 100644
--- a/lib/Frontend/CompilerInstance.cpp
+++ b/lib/Frontend/CompilerInstance.cpp
@@ -1024,7 +1024,7 @@
     int FD;
     if (llvm::sys::fs::unique_file(TempModuleMapFileName.str(), FD, 
                                    TempModuleMapFileName,
-                                   /*makeAbsolute=*/false)
+                                   /*makeAbsolute=*/true)
           != llvm::errc::success)
       return;