diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 75e475a..15ea901 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -492,10 +492,10 @@
   // Process -include directives.
   for (PreprocessorOptions::include_iterator I = InitOpts.include_begin(),
        E = InitOpts.include_end(); I != E; ++I) {
-    if (I->second) // isPTH
-      AddImplicitIncludePTH(PredefineBuffer, PP, I->first);
+    if (*I == InitOpts.getImplicitPTHInclude())
+      AddImplicitIncludePTH(PredefineBuffer, PP, *I);
     else
-      AddImplicitInclude(PredefineBuffer, I->first);
+      AddImplicitInclude(PredefineBuffer, *I);
   }
 
   // Null terminate PredefinedBuffer and add it.