diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index 325d05c..9bf5dd0 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -3089,6 +3089,7 @@ CheckJob::continuation begin(CheckJob *job) {
       return nullptr; // Done
     }
     job->n = getFirstChildExists(job->n);
+    __builtin_prefetch(job->n);
     return down_left_spine;
   }