1 files changed, 1 insertions, 0 deletions
diff --git a/lib/drb/drb.rb b/lib/drb/drb.rb
index 25fbb3f788..cec279fd1b 100644
--- a/lib/drb/drb.rb
+++ b/lib/drb/drb.rb
@@ -1201,6 +1201,7 @@ module DRb
     end
 
     def alive?  # :nodoc:
+      return false unless @protocol
       @protocol.alive?
     end
   end