diff --git a/lib/Transforms/IPO/StructRetPromotion.cpp b/lib/Transforms/IPO/StructRetPromotion.cpp
index 67fc9349c5f..9f659d5afaa 100644
--- a/lib/Transforms/IPO/StructRetPromotion.cpp
+++ b/lib/Transforms/IPO/StructRetPromotion.cpp
@@ -93,7 +93,7 @@ CallGraphNode *SRETPromotion::PromoteReturn(CallGraphNode *CGN) {
   if (F->arg_size() == 0 || !F->hasStructRetAttr() || F->doesNotReturn())
     return 0;
 
-  DEBUG(errs() << "SretPromotion: Looking at sret function " 
+  DEBUG(dbgs() << "SretPromotion: Looking at sret function " 
         << F->getName() << "\n");
 
   assert(F->getReturnType() == Type::getVoidTy(F->getContext()) &&
@@ -107,12 +107,12 @@ CallGraphNode *SRETPromotion::PromoteReturn(CallGraphNode *CGN) {
 
   // Check if it is ok to perform this promotion.
   if (isSafeToUpdateAllCallers(F) == false) {
-    DEBUG(errs() << "SretPromotion: Not all callers can be updated\n");
+    DEBUG(dbgs() << "SretPromotion: Not all callers can be updated\n");
     NumRejectedSRETUses++;
     return 0;
   }
 
-  DEBUG(errs() << "SretPromotion: sret argument will be promoted\n");
+  DEBUG(dbgs() << "SretPromotion: sret argument will be promoted\n");
   NumSRET++;
   // [1] Replace use of sret parameter 
   AllocaInst *TheAlloca = new AllocaInst(STy, NULL, "mrv",