diff --git a/src/bitcoin-cli.cpp b/src/bitcoin-cli.cpp
--- a/src/bitcoin-cli.cpp
+++ b/src/bitcoin-cli.cpp
@@ -201,11 +201,6 @@
         fprintf(stderr, "Error: %s\n", e.what());
         return EXIT_FAILURE;
     }
-    if (gArgs.GetBoolArg("-rpcssl", false)) {
-        fprintf(stderr,
-                "Error: SSL mode for RPC (-rpcssl) is no longer supported.\n");
-        return EXIT_FAILURE;
-    }
     return CONTINUE_EXECUTION;
 }
 
diff --git a/src/httpserver.cpp b/src/httpserver.cpp
--- a/src/httpserver.cpp
+++ b/src/httpserver.cpp
@@ -382,13 +382,6 @@
         return false;
     }
 
-    if (gArgs.GetBoolArg("-rpcssl", false)) {
-        uiInterface.ThreadSafeMessageBox(
-            "SSL mode for RPC (-rpcssl) is no longer supported.", "",
-            CClientUIInterface::MSG_ERROR);
-        return false;
-    }
-
     // Redirect libevent's logging to our own log
     event_set_log_callback(&libevent_log_cb);
     // Update libevent's log handling. Returns false if our version of
diff --git a/src/init.cpp b/src/init.cpp
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -378,10 +378,9 @@
 
     // Hidden Options
     std::vector<std::string> hidden_args = {
-        "-rpcssl", "-benchmark", "-h", "-help", "-socks", "-tor", "-debugnet",
-        "-whitelistalwaysrelay", "-blockminsize", "-dbcrashratio",
-        "-forcecompactdb", "-parkdeepreorg", "-automaticunparking",
-        "-replayprotectionactivationtime", "-enableminerfund",
+        "-h", "-help", "-dbcrashratio", "-forcecompactdb", "-parkdeepreorg",
+        "-automaticunparking", "-replayprotectionactivationtime",
+        "-enableminerfund",
         // GUI args. These will be overwritten by SetupUIArgs for the GUI
         "-allowselfsignedrootcertificates", "-choosedatadir", "-lang=<lang>",
         "-min", "-resetguisettings", "-rootcertificates=<file>", "-splash",
@@ -1660,36 +1659,6 @@
         }
     }
 
-    // Check for -debugnet
-    if (gArgs.GetBoolArg("-debugnet", false)) {
-        InitWarning(
-            _("Unsupported argument -debugnet ignored, use -debug=net."));
-    }
-    // Check for -socks - as this is a privacy risk to continue, exit here
-    if (gArgs.IsArgSet("-socks")) {
-        return InitError(
-            _("Unsupported argument -socks found. Setting SOCKS version isn't "
-              "possible anymore, only SOCKS5 proxies are supported."));
-    }
-    // Check for -tor - as this is a privacy risk to continue, exit here
-    if (gArgs.GetBoolArg("-tor", false)) {
-        return InitError(_("Unsupported argument -tor found, use -onion."));
-    }
-
-    if (gArgs.GetBoolArg("-benchmark", false)) {
-        InitWarning(
-            _("Unsupported argument -benchmark ignored, use -debug=bench."));
-    }
-
-    if (gArgs.GetBoolArg("-whitelistalwaysrelay", false)) {
-        InitWarning(_("Unsupported argument -whitelistalwaysrelay ignored, use "
-                      "-whitelistrelay and/or -whitelistforcerelay."));
-    }
-
-    if (gArgs.IsArgSet("-blockminsize")) {
-        InitWarning("Unsupported argument -blockminsize ignored.");
-    }
-
     // Checkmempool and checkblockindex default to true in regtest mode
     int ratio = std::min<int>(
         std::max<int>(
diff --git a/test/lint/check-doc.py b/test/lint/check-doc.py
--- a/test/lint/check-doc.py
+++ b/test/lint/check-doc.py
@@ -31,10 +31,7 @@
                                    '-zmqpubrawtx'])
 
 # list false positive undocumented arguments
-SET_FALSE_POSITIVE_UNDOCUMENTED = set(['-benchmark',
-                                       '-blockminsize',
-                                       '-dbcrashratio',
-                                       '-debugnet',
+SET_FALSE_POSITIVE_UNDOCUMENTED = set(['-dbcrashratio',
                                        '-enableminerfund',
                                        '-forcecompactdb',
                                        '-parkdeepreorg',
@@ -42,10 +39,7 @@
                                        # Remove after May 2020 upgrade
                                        '-phononactivationtime',
                                        '-replayprotectionactivationtime',
-                                       '-rpcssl',
-                                       '-socks',
-                                       '-tor',
-                                       '-whitelistalwaysrelay'])
+                                       ])
 
 
 def main():