diff --git a/src/seeder/main.cpp b/src/seeder/main.cpp
--- a/src/seeder/main.cpp
+++ b/src/seeder/main.cpp
@@ -348,6 +348,7 @@
     signal(SIGPIPE, SIG_IGN);
     setbuf(stdout, nullptr);
     CDnsSeedOpts opts;
+    SetupSeederArgs(gArgs);
     int parseResults =
         opts.ParseCommandLine(argc, const_cast<const char **>(argv));
     if (parseResults != CONTINUE_EXECUTION) {
diff --git a/src/seeder/options.h b/src/seeder/options.h
--- a/src/seeder/options.h
+++ b/src/seeder/options.h
@@ -50,9 +50,8 @@
           ipv6_proxy(DEFAULT_IPV6_PROXY) {}
 
     int ParseCommandLine(int argc, const char **argv);
-
-private:
-    void SetupSeederArgs(ArgsManager &argsman);
 };
 
+void SetupSeederArgs(ArgsManager &argsman);
+
 #endif // BITCOIN_SEEDER_OPTIONS_H
diff --git a/src/seeder/options.cpp b/src/seeder/options.cpp
--- a/src/seeder/options.cpp
+++ b/src/seeder/options.cpp
@@ -11,7 +11,6 @@
 #include <string>
 
 int CDnsSeedOpts::ParseCommandLine(int argc, const char **argv) {
-    SetupSeederArgs(gArgs);
     std::string error;
     if (!gArgs.ParseParameters(argc, argv, error)) {
         tfm::format(std::cerr, "Error parsing command line arguments: %s\n",
@@ -76,7 +75,7 @@
     return CONTINUE_EXECUTION;
 }
 
-void CDnsSeedOpts::SetupSeederArgs(ArgsManager &argsman) {
+void SetupSeederArgs(ArgsManager &argsman) {
     SetupHelpOptions(argsman);
     argsman.AddArg("-help-debug",
                    "Show all debugging options (usage: --help -help-debug)",
diff --git a/src/seeder/test/options_tests.cpp b/src/seeder/test/options_tests.cpp
--- a/src/seeder/test/options_tests.cpp
+++ b/src/seeder/test/options_tests.cpp
@@ -3,21 +3,42 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <seeder/options.h>
+#include <util/system.h>
 
 #include <boost/test/unit_test.hpp>
 
-BOOST_AUTO_TEST_SUITE(options_tests)
+class ArgsTestingSetup {
+public:
+    ArgsTestingSetup() { SetupSeederArgs(gArgs); }
+    ~ArgsTestingSetup() { gArgs.ClearArgs(); }
+};
+
+BOOST_FIXTURE_TEST_SUITE(options_tests, ArgsTestingSetup)
 
 BOOST_AUTO_TEST_CASE(options_basic_test) {
-    CDnsSeedOpts opts;
-    const char *argv[] = {"ignored", "-host=seeder.bitcoinabc.org",
-                          "-ns=localhost", "-mbox=email@bitcoinabc.org",
-                          "-port=5555"};
-    BOOST_CHECK(opts.ParseCommandLine(5, argv) == CONTINUE_EXECUTION);
-    BOOST_CHECK(opts.host == "seeder.bitcoinabc.org");
-    BOOST_CHECK(opts.ns == "localhost");
-    BOOST_CHECK(opts.mbox == "email@bitcoinabc.org");
-    BOOST_CHECK(opts.nPort == 5555);
+    {
+        // Check relevant defaults
+        CDnsSeedOpts opts;
+        const char *argv[] = {"ignored"};
+        BOOST_CHECK(opts.ParseCommandLine(1, argv) == CONTINUE_EXECUTION);
+        BOOST_CHECK(opts.nPort == 53);
+        BOOST_CHECK(opts.nThreads == 96);
+        BOOST_CHECK(opts.nDnsThreads == 4);
+        BOOST_CHECK(opts.fWipeBan == false);
+        BOOST_CHECK(opts.fWipeIgnore == false);
+    }
+    {
+        // Example real-world use case
+        CDnsSeedOpts opts;
+        const char *argv[] = {"ignored", "-host=seeder.bitcoinabc.org",
+                              "-ns=localhost", "-mbox=email@bitcoinabc.org",
+                              "-port=5555"};
+        BOOST_CHECK(opts.ParseCommandLine(5, argv) == CONTINUE_EXECUTION);
+        BOOST_CHECK(opts.host == "seeder.bitcoinabc.org");
+        BOOST_CHECK(opts.ns == "localhost");
+        BOOST_CHECK(opts.mbox == "email@bitcoinabc.org");
+        BOOST_CHECK(opts.nPort == 5555);
+    }
 }
 
 BOOST_AUTO_TEST_SUITE_END()