diff --git a/simgear/threads/SGThread.cxx b/simgear/threads/SGThread.cxx
index b5761215..0ba71f40 100644
--- a/simgear/threads/SGThread.cxx
+++ b/simgear/threads/SGThread.cxx
@@ -81,7 +81,7 @@ struct SGThread::PrivateData {
     HANDLE _handle;
 };
 
-static long SGThread::current( void ) {
+long SGThread::current( void ) {
     return (long)GetCurrentThreadId();
 }