diff --git a/src/evo/netinfo.cpp b/src/evo/netinfo.cpp
index ed5fc19053db1..38e767d69ca70 100644
--- a/src/evo/netinfo.cpp
+++ b/src/evo/netinfo.cpp
@@ -36,12 +36,9 @@ NetInfoStatus MnNetInfo::ValidateService(const CService& service)
         return NetInfoStatus::BadInput;
     }
 
-    const auto default_port_main = MainParams().GetDefaultPort();
-    if (IsNodeOnMainnet() && service.GetPort() != default_port_main) {
-        // Must use mainnet port on mainnet
-        return NetInfoStatus::BadPort;
-    } else if (service.GetPort() == default_port_main) {
-        // Using mainnet port prohibited outside of mainnet
+    if (IsNodeOnMainnet() != (service.GetPort() == MainParams().GetDefaultPort())) {
+        // Must use mainnet port on mainnet.
+        // Must NOT use mainnet port on other networks.
         return NetInfoStatus::BadPort;
     }
 
diff --git a/src/test/evo_netinfo_tests.cpp b/src/test/evo_netinfo_tests.cpp
index a7f376ff24c07..2c8952b234f0c 100644
--- a/src/test/evo_netinfo_tests.cpp
+++ b/src/test/evo_netinfo_tests.cpp
@@ -11,29 +11,31 @@
 
 #include <boost/test/unit_test.hpp>
 
+BOOST_FIXTURE_TEST_SUITE(evo_netinfo_tests, BasicTestingSetup)
+
 const std::vector<std::pair</*input=*/std::string, /*expected_ret=*/NetInfoStatus>> vals{
     // Address and port specified
-    {"1.1.1.1:8888", NetInfoStatus::Success},
+    {"1.1.1.1:9999", NetInfoStatus::Success},
     // Address specified, port should default to default P2P core
     {"1.1.1.1", NetInfoStatus::Success},
-    // Mainnet P2P port on non-mainnet
-    {"1.1.1.1:9999", NetInfoStatus::BadPort},
+    // Non-mainnet port on mainnet
+    {"1.1.1.1:9998", NetInfoStatus::BadPort},
+    // Internal addresses not allowed on mainnet
+    {"127.0.0.1:9999", NetInfoStatus::BadInput},
     // Valid IPv4 formatting but invalid IPv4 address
-    {"0.0.0.0:8888", NetInfoStatus::BadInput},
+    {"0.0.0.0:9999", NetInfoStatus::BadInput},
     // Port greater than uint16_t max
     {"1.1.1.1:99999", NetInfoStatus::BadInput},
     // Only IPv4 allowed
-    {"[2606:4700:4700::1111]:8888", NetInfoStatus::BadInput},
+    {"[2606:4700:4700::1111]:9999", NetInfoStatus::BadInput},
     // Domains are not allowed
-    {"example.com:8888", NetInfoStatus::BadInput},
+    {"example.com:9999", NetInfoStatus::BadInput},
     // Incorrect IPv4 address
-    {"1.1.1.256:8888", NetInfoStatus::BadInput},
+    {"1.1.1.256:9999", NetInfoStatus::BadInput},
     // Missing address
-    {":8888", NetInfoStatus::BadInput},
+    {":9999", NetInfoStatus::BadInput},
 };
 
-BOOST_FIXTURE_TEST_SUITE(evo_netinfo_tests, RegTestingSetup)
-
 void ValidateGetEntries(const CServiceList& entries, const size_t expected_size)
 {
     BOOST_CHECK_EQUAL(entries.size(), expected_size);