Index: lldb/trunk/source/Plugins/Process/Windows/Common/NativeProcessWindows.cpp
===================================================================
--- lldb/trunk/source/Plugins/Process/Windows/Common/NativeProcessWindows.cpp
+++ lldb/trunk/source/Plugins/Process/Windows/Common/NativeProcessWindows.cpp
@@ -177,9 +177,9 @@
     else
       LLDB_LOG(log, "Detaching process error: {0}", error);
   } else {
-    error.SetErrorStringWithFormat("error: process {0} in state = {1}, but "
-                                   "cannot detach it in this state.",
-                                   GetID(), state);
+    error.SetErrorStringWithFormatv("error: process {0} in state = {1}, but "
+                                    "cannot detach it in this state.",
+                                    GetID(), state);
     LLDB_LOG(log, "error: {0}", error);
   }
   return error;
Index: lldb/trunk/source/Plugins/Process/Windows/Common/ProcessWindows.cpp
===================================================================
--- lldb/trunk/source/Plugins/Process/Windows/Common/ProcessWindows.cpp
+++ lldb/trunk/source/Plugins/Process/Windows/Common/ProcessWindows.cpp
@@ -170,9 +170,9 @@
     else
       LLDB_LOG(log, "Detaching process error: {0}", error);
   } else {
-    error.SetErrorStringWithFormat("error: process {0} in state = {1}, but "
-                                   "cannot detach it in this state.",
-                                   GetID(), private_state);
+    error.SetErrorStringWithFormatv("error: process {0} in state = {1}, but "
+                                    "cannot detach it in this state.",
+                                    GetID(), private_state);
     LLDB_LOG(log, "error: {0}", error);
   }
   return error;