diff --git a/tools/bugpoint/ToolRunner.cpp b/tools/bugpoint/ToolRunner.cpp
index 25a2baef7dc..d975d68d969 100644
--- a/tools/bugpoint/ToolRunner.cpp
+++ b/tools/bugpoint/ToolRunner.cpp
@@ -128,7 +128,7 @@ static int RunProgramRemotelyWithTimeout(const sys::Path &RemoteClientPath,
       ErrorFile.close();
     }
 
-    errs() << OS;
+    errs() << OS.str();
   }
 
   return ReturnCode;