diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index c4ab3e99c89..105ff6c198f 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -859,9 +859,8 @@ DwarfDebug::buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
     auto CurEntry = DebugLoc.rbegin();
     DEBUG({
       dbgs() << CurEntry->getValues().size() << " Values:\n";
-      for (auto Value : CurEntry->getValues()) {
+      for (auto &Value : CurEntry->getValues())
         Value.getExpression()->dump();
-      }
       dbgs() << "-----\n";
     });