diff --git a/src/libCom/osi/os/WIN32/osdThread.c b/src/libCom/osi/os/WIN32/osdThread.c
index bb666359d..8c032f750 100644
--- a/src/libCom/osi/os/WIN32/osdThread.c
+++ b/src/libCom/osi/os/WIN32/osdThread.c
@@ -741,19 +741,12 @@ epicsShareFunc void epicsShareAPI epicsThreadOnceOsd (
     assert ( stat == WAIT_OBJECT_0 );
 
     if ( ! *id ) {
+        ( *func ) ( arg );
         *id = 1;
-        doit = 1;
-    }
-    else {
-        doit = 0;
     }
 
     success = ReleaseMutex ( win32ThreadGlobalMutex );
     assert ( success );
-
-    if ( doit ) {
-        ( *func ) ( arg );
-    }
 }
 
 /*