diff --git a/lib/libvgl/main.c b/lib/libvgl/main.c
index 63a3247b6e77..04db5307d2ef 100644
--- a/lib/libvgl/main.c
+++ b/lib/libvgl/main.c
@@ -73,6 +73,7 @@ struct vt_mode smode;
 
   if (!VGLInitDone)
     return;
+  VGLInitDone = 0;
   signal(SIGUSR1, SIG_IGN);
   signal(SIGUSR2, SIG_IGN);
   VGLSwitchPending = 0;