diff --git a/ofborg/src/bin/mass-rebuilder.rs b/ofborg/src/bin/mass-rebuilder.rs
index 86b02e6..695ff20 100644
--- a/ofborg/src/bin/mass-rebuilder.rs
+++ b/ofborg/src/bin/mass-rebuilder.rs
@@ -70,6 +70,7 @@ fn main() {
     }));
      */
 
+    channel.basic_prefetch(1);
     channel.basic_consume(
         worker::new(mrw),
         "mass-rebuild-check-jobs",