diff --git a/src/dbwrapper.cpp b/src/dbwrapper.cpp
index 271824038c..c3cec13356 100644
--- a/src/dbwrapper.cpp
+++ b/src/dbwrapper.cpp
@@ -197,13 +197,15 @@ bool CDBWrapper::WriteBatch(CDBBatch& batch, bool fSync)
     return true;
 }
 
-size_t CDBWrapper::DynamicMemoryUsage() const {
+size_t CDBWrapper::DynamicMemoryUsage() const
+{
     std::string memory;
-    if (!pdb->GetProperty("leveldb.approximate-memory-usage", &memory)) {
+    std::optional<size_t> parsed;
+    if (!pdb->GetProperty("leveldb.approximate-memory-usage", &memory) || !(parsed = ToIntegral<size_t>(memory))) {
         LogPrint(BCLog::LEVELDB, "Failed to get approximate-memory-usage property\n");
         return 0;
     }
-    return stoul(memory);
+    return parsed.value();
 }
 
 // Prefixed with null character to avoid collisions with other keys
diff --git a/test/lint/lint-locale-dependence.sh b/test/lint/lint-locale-dependence.sh
index 3f1ef8daf1..691c39ced0 100755
--- a/test/lint/lint-locale-dependence.sh
+++ b/test/lint/lint-locale-dependence.sh
@@ -43,7 +43,6 @@ export LC_ALL=C
 
 KNOWN_VIOLATIONS=(
     "src/bitcoin-tx.cpp.*stoul"
-    "src/dbwrapper.cpp.*stoul"
     "src/dbwrapper.cpp:.*vsnprintf"
     "src/rest.cpp:.*strtol"
     "src/statsd_client.cpp:.*snprintf"