1 files changed, 1 insertions, 0 deletions
diff --git a/lib/drb/drb.rb b/lib/drb/drb.rb
index fda18401dd..5eb7345e1b 100644
--- a/lib/drb/drb.rb
+++ b/lib/drb/drb.rb
@@ -1295,6 +1295,7 @@ module DRb
     end
 
     def run
+      raise if Thread.critical
       Thread.start do
 	begin
 	  while true