diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index d88e57d..e79453c 100644
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -68,7 +68,7 @@
     // Make sure we have enough space in the spelling buffer.
     if (I->getLength() < SpellingBuffer.size())
       SpellingBuffer.resize(I->getLength());
-    const char *Buffer = &SpellingBuffer[0];
+    const char *Buffer = SpellingBuffer.data();
     unsigned SpellingLen = PP.getSpelling(*I, Buffer);
     OS.write(Buffer, SpellingLen);
   }