Index: include/llvm/Support/raw_ostream.h
===================================================================
--- include/llvm/Support/raw_ostream.h
+++ include/llvm/Support/raw_ostream.h
@@ -345,7 +345,7 @@
   explicit raw_pwrite_stream(bool Unbuffered = false)
       : raw_ostream(Unbuffered) {}
   void pwrite(const char *Ptr, size_t Size, uint64_t Offset) {
-#ifndef NDBEBUG
+#ifndef NDEBUG
     uint64_t Pos = tell();
     // /dev/null always reports a pos of 0, so we cannot perform this check
     // in that case.