diff --git a/src/seeder/main.cpp b/src/seeder/main.cpp
--- a/src/seeder/main.cpp
+++ b/src/seeder/main.cpp
@@ -18,6 +18,19 @@
 
 const std::function<std::string(const char *)> G_TRANSLATION_FUN = nullptr;
 
+static const int THREADS_DEFAULT = 96;
+static const int PORT_DEFAULT = 53;
+static const int DNSTHREADS_DEFAULT = 4;
+static const bool TESTNET_DEFAULT = false;
+static const bool WIPE_BAN_DEFAULT = false;
+static const bool WIPE_IGNORE_DEFAULT = false;
+static const char *MBOX_DEFAULT = nullptr;
+static const char *NS_DEFAULT = nullptr;
+static const char *HOST_DEFAULT = nullptr;
+static const char *TOR_DEFAULT = nullptr;
+static const char *IPV4_PROXY_DEFAULT = nullptr;
+static const char *IPV6_PROXY_DEFAULT = nullptr;
+
 class CDnsSeedOpts {
 public:
     int nThreads;
@@ -35,10 +48,12 @@
     std::set<uint64_t> filter_whitelist;
 
     CDnsSeedOpts()
-        : nThreads(96), nPort(53), nDnsThreads(4), fUseTestNet(false),
-          fWipeBan(false), fWipeIgnore(false), mbox(nullptr), ns(nullptr),
-          host(nullptr), tor(nullptr), ipv4_proxy(nullptr),
-          ipv6_proxy(nullptr) {}
+        : nThreads(THREADS_DEFAULT), nPort(PORT_DEFAULT),
+          nDnsThreads(DNSTHREADS_DEFAULT), fUseTestNet(TESTNET_DEFAULT),
+          fWipeBan(WIPE_BAN_DEFAULT), fWipeIgnore(WIPE_IGNORE_DEFAULT),
+          mbox(MBOX_DEFAULT), ns(NS_DEFAULT), host(HOST_DEFAULT),
+          tor(TOR_DEFAULT), ipv4_proxy(IPV4_PROXY_DEFAULT),
+          ipv6_proxy(IPV6_PROXY_DEFAULT) {}
 
     void ParseCommandLine(int argc, char **argv) {
         static const char *help =