diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index 7f2a47fd4c..f264f6248e 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -322,8 +322,9 @@ void LAccessArgumentsAt::PrintDataTo(StringStream* stream) {
 
 void LStoreNamedField::PrintDataTo(StringStream* stream) {
   object()->PrintTo(stream);
-  hydrogen()->access().PrintTo(stream);
-  stream->Add(" <- ");
+  OStringStream os;
+  os << hydrogen()->access() << " <- ";
+  stream->Add(os.c_str());
   value()->PrintTo(stream);
 }
 
diff --git a/src/mips/simulator-mips.cc b/src/mips/simulator-mips.cc
index f329703517..052eaed827 100644
--- a/src/mips/simulator-mips.cc
+++ b/src/mips/simulator-mips.cc
@@ -455,17 +455,18 @@ void MipsDebugger::Debug() {
                  || (strcmp(cmd, "printobject") == 0)) {
         if (argc == 2) {
           int32_t value;
+          OFStream os(stdout);
           if (GetValue(arg1, &value)) {
             Object* obj = reinterpret_cast<Object*>(value);
-            PrintF("%s: \n", arg1);
+            os << arg1 << ": \n";
 #ifdef DEBUG
-            obj->PrintLn();
+            obj->Print(os);
+            os << "\n";
 #else
-            obj->ShortPrint();
-            PrintF("\n");
+            os << Brief(obj) << "\n";
 #endif
           } else {
-            PrintF("%s unrecognized\n", arg1);
+            os << arg1 << " unrecognized\n";
           }
         } else {
           PrintF("printobject <value>\n");