diff --git a/src/cpu/x86seg.c b/src/cpu/x86seg.c
index 553e3dbc41b..330a6b6800e 100644
--- a/src/cpu/x86seg.c
+++ b/src/cpu/x86seg.c
@@ -2469,6 +2469,7 @@ taskswitch286(uint16_t seg, uint16_t *segdat, int is32)
     tr.limit   = limit;
     tr.access  = segdat[2] >> 8;
     tr.ar_high = segdat[3] & 0xff;
+    dr[7] &= 0b10101010;
 }
 
 void