diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -628,11 +628,11 @@
                           {RPCResult::Type::STR_HEX, "", "The transaction id"},
                       }},
             RPCResult{"for verbose = true",
-                      RPCResult::Type::OBJ,
+                      RPCResult::Type::OBJ_DYN,
                       "",
                       "",
                       {
-                          {RPCResult::Type::OBJ_DYN, "transactionid", "",
+                          {RPCResult::Type::OBJ, "transactionid", "",
                            MempoolEntryDescription()},
                       }},
         },
@@ -668,7 +668,7 @@
                 "",
                 {{RPCResult::Type::STR_HEX, "",
                   "The transaction id of an in-mempool ancestor transaction"}}},
-            RPCResult{"for verbose = true", RPCResult::Type::OBJ_DYN,
+            RPCResult{"for verbose = true", RPCResult::Type::OBJ,
                       "transactionid", "", MempoolEntryDescription()},
         },
         RPCExamples{HelpExampleCli("getmempoolancestors", "\"mytxid\"") +
@@ -738,11 +738,11 @@
                         "The transaction id of an in-mempool descendant "
                         "transaction"}}},
             RPCResult{"for verbose = true",
-                      RPCResult::Type::OBJ,
+                      RPCResult::Type::OBJ_DYN,
                       "",
                       "",
                       {
-                          {RPCResult::Type::OBJ_DYN, "transactionid", "",
+                          {RPCResult::Type::OBJ, "transactionid", "",
                            MempoolEntryDescription()},
                       }},
         },
@@ -801,7 +801,7 @@
             {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO,
              "The transaction id (must be in mempool)"},
         },
-        RPCResult{RPCResult::Type::OBJ_DYN, "", "", MempoolEntryDescription()},
+        RPCResult{RPCResult::Type::OBJ, "", "", MempoolEntryDescription()},
         RPCExamples{HelpExampleCli("getmempoolentry", "\"mytxid\"") +
                     HelpExampleRpc("getmempoolentry", "\"mytxid\"")},
     }