diff --git a/sys/src/9/pc/vgavesa.c b/sys/src/9/pc/vgavesa.c
index 9a260907f..8c4c5f9c5 100644
--- a/sys/src/9/pc/vgavesa.c
+++ b/sys/src/9/pc/vgavesa.c
@@ -265,6 +265,10 @@ vesadisable(VGAscr *)
 {
 	vesactl = Cdisable;
 	wakeup(&vesar);
+
+	/* wait for vesaproc to finish */
+	qlock(&vesaq);
+	qunlock(&vesaq);
 }
 
 static void