diff --git a/examples/repl/cmdline.rs b/examples/repl/cmdline.rs
index 0e72396d1..cc5baf4e3 100644
--- a/examples/repl/cmdline.rs
+++ b/examples/repl/cmdline.rs
@@ -1192,6 +1192,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                 bail!("Command failed.");
             }
         }
+        "" => (),
         _ => bail!("Unknown command: \"{}\" type ? for help.", arg0),
     }