diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index b19fa048cfd..e64a6e8e51f 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -753,7 +753,7 @@ void Interpreter::visitAllocationInst(AllocationInst &I) {
 
   DOUT << "Allocated Type: " << *Ty << " (" << TypeSize << " bytes) x " 
        << NumElements << " (Total: " << MemToAlloc << ") at "
-       << unsigned(Memory) << '\n';
+       << std::hex << Memory << '\n';
 
   GenericValue Result = PTOGV(Memory);
   assert(Result.PointerVal != 0 && "Null pointer returned by malloc!");