diff --git a/gcc/reorg.c b/gcc/reorg.c
index 98b7f299060..40d3702394e 100644
--- a/gcc/reorg.c
+++ b/gcc/reorg.c
@@ -3266,7 +3266,11 @@ fill_slots_from_thread (insn, condition, thread, opposite_thread, likely,
 		{
 		  update_block (trial, thread);
 		  if (trial == thread)
-		    thread = next_active_insn (thread);
+		    {
+		      thread = next_active_insn (thread);
+		      if (new_thread == trial)
+			new_thread = thread;
+		    }
 
 		  delete_insn (trial);
 		}