diff --git a/lib/irb/ext/multi-irb.rb b/lib/irb/ext/multi-irb.rb
index 9f234f0cd..71a50ff29 100644
--- a/lib/irb/ext/multi-irb.rb
+++ b/lib/irb/ext/multi-irb.rb
@@ -65,6 +65,7 @@ def switch(key)
       @current_job = irb
       th.run
       Thread.stop
+      Thread.pass
       @current_job = irb(Thread.current)
     end
 
@@ -220,6 +221,7 @@ def IRB.irb(file = nil, *main) # :nodoc:
       end
     end
     Thread.stop
+    Thread.pass
     @JobManager.current_job = @JobManager.irb(Thread.current)
   end