diff --git a/src/validation.cpp b/src/validation.cpp
index bb13cbaadbc..0509773aa9d 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -4202,7 +4202,7 @@ void DumpMempool(void)
     {
         LOCK(mempool.cs);
         for (const auto &i : mempool.mapDeltas) {
-            mapDeltas[i.first] = i.second.first;
+            mapDeltas[i.first] = i.second.second;
         }
         vinfo = mempool.infoAll();
     }