diff --git a/src/init.cpp b/src/init.cpp
index efbc9f41d9f..ea0d7640c6d 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -417,7 +417,7 @@ void SetupServerArgs(ArgsManager& argsman)
     argsman.AddArg("-loadblock=<file>", "Imports blocks from external file on startup", ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-maxmempool=<n>", strprintf("Keep the transaction memory pool below <n> megabytes (default: %u)", DEFAULT_MAX_MEMPOOL_SIZE_MB), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-maxorphantx=<n>", strprintf("Keep at most <n> unconnectable transactions in memory (default: %u)", DEFAULT_MAX_ORPHAN_TRANSACTIONS), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
-    argsman.AddArg("-mempoolexpiry=<n>", strprintf("Do not keep transactions in the mempool longer than <n> hours (default: %u)", DEFAULT_MEMPOOL_EXPIRY), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
+    argsman.AddArg("-mempoolexpiry=<n>", strprintf("Do not keep transactions in the mempool longer than <n> hours (default: %u)", DEFAULT_MEMPOOL_EXPIRY_HOURS), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
     argsman.AddArg("-minimumchainwork=<hex>", strprintf("Minimum work assumed to exist on a valid chain in hex (default: %s, testnet: %s, signet: %s)", defaultChainParams->GetConsensus().nMinimumChainWork.GetHex(), testnetChainParams->GetConsensus().nMinimumChainWork.GetHex(), signetChainParams->GetConsensus().nMinimumChainWork.GetHex()), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::OPTIONS);
     argsman.AddArg("-par=<n>", strprintf("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)",
         -GetNumCores(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS), ArgsManager::ALLOW_ANY, OptionsCategory::OPTIONS);
diff --git a/src/kernel/mempool_options.h b/src/kernel/mempool_options.h
index 35621e1a28e..c4f34ff9f99 100644
--- a/src/kernel/mempool_options.h
+++ b/src/kernel/mempool_options.h
@@ -12,7 +12,7 @@ class CBlockPolicyEstimator;
 /** Default for -maxmempool, maximum megabytes of mempool memory usage */
 static constexpr unsigned int DEFAULT_MAX_MEMPOOL_SIZE_MB{300};
 /** Default for -mempoolexpiry, expiration time for mempool transactions in hours */
-static constexpr unsigned int DEFAULT_MEMPOOL_EXPIRY{336};
+static constexpr unsigned int DEFAULT_MEMPOOL_EXPIRY_HOURS{336};
 
 namespace kernel {
 /**
@@ -28,7 +28,7 @@ struct MemPoolOptions {
     /* The ratio used to determine how often sanity checks will run.  */
     int check_ratio{0};
     int64_t max_size_bytes{DEFAULT_MAX_MEMPOOL_SIZE_MB * 1'000'000};
-    std::chrono::seconds expiry{std::chrono::hours{DEFAULT_MEMPOOL_EXPIRY}};
+    std::chrono::seconds expiry{std::chrono::hours{DEFAULT_MEMPOOL_EXPIRY_HOURS}};
 };
 } // namespace kernel
 
diff --git a/test/functional/mempool_expiry.py b/test/functional/mempool_expiry.py
index f301b29c254..47ae0c762b4 100755
--- a/test/functional/mempool_expiry.py
+++ b/test/functional/mempool_expiry.py
@@ -5,7 +5,7 @@
 """Tests that a mempool transaction expires after a given timeout and that its
 children are removed as well.
 
-Both the default expiry timeout defined by DEFAULT_MEMPOOL_EXPIRY and a user
+Both the default expiry timeout defined by DEFAULT_MEMPOOL_EXPIRY_HOURS and a user
 definable expiry timeout via the '-mempoolexpiry=<n>' command line argument
 (<n> is the timeout in hours) are tested.
 """
@@ -20,7 +20,7 @@ from test_framework.util import (
 )
 from test_framework.wallet import MiniWallet
 
-DEFAULT_MEMPOOL_EXPIRY = 336  # hours
+DEFAULT_MEMPOOL_EXPIRY_HOURS = 336  # hours
 CUSTOM_MEMPOOL_EXPIRY = 10  # hours
 
 
@@ -98,8 +98,8 @@ class MempoolExpiryTest(BitcoinTestFramework):
 
     def run_test(self):
         self.log.info('Test default mempool expiry timeout of %d hours.' %
-                      DEFAULT_MEMPOOL_EXPIRY)
-        self.test_transaction_expiry(DEFAULT_MEMPOOL_EXPIRY)
+                      DEFAULT_MEMPOOL_EXPIRY_HOURS)
+        self.test_transaction_expiry(DEFAULT_MEMPOOL_EXPIRY_HOURS)
 
         self.log.info('Test custom mempool expiry timeout of %d hours.' %
                       CUSTOM_MEMPOOL_EXPIRY)