diff --git a/src/flags.cc b/src/flags.cc
index 1fa17bd89..c4c2aa4b2 100644
--- a/src/flags.cc
+++ b/src/flags.cc
@@ -87,9 +87,10 @@ GLOG_DEFINE_bool(
 //
 // The default is ERROR instead of FATAL so that users can see problems
 // when they run a program without having to look in another file.
-DEFINE_int32(stderrthreshold, google::GLOG_ERROR,
-             "log messages at or above this level are copied to stderr in "
-             "addition to logfiles.  This flag obsoletes --alsologtostderr.");
+GLOG_DEFINE_int32(
+    stderrthreshold, google::GLOG_ERROR,
+    "log messages at or above this level are copied to stderr in "
+    "addition to logfiles.  This flag obsoletes --alsologtostderr.");
 
 GLOG_DEFINE_string(alsologtoemail, "",
                    "log messages go to these email addresses "