diff --git a/src/bitcoind.cpp b/src/bitcoind.cpp
--- a/src/bitcoind.cpp
+++ b/src/bitcoind.cpp
@@ -87,7 +87,7 @@
                         "  bitcoind [options]                     " +
                         strprintf(_("Start %s Daemon"), _(PACKAGE_NAME)) + "\n";
 
-            strUsage += "\n" + HelpMessage(HMM_BITCOIND);
+            strUsage += "\n" + HelpMessage(HelpMessageMode::BITCOIND);
         }
 
         fprintf(stdout, "%s", strUsage.c_str());
diff --git a/src/init.h b/src/init.h
--- a/src/init.h
+++ b/src/init.h
@@ -74,7 +74,7 @@
                  HTTPRPCRequestProcessor &httpRPCRequestProcessor);
 
 /** The help message mode determines what help message to show */
-enum HelpMessageMode { HMM_BITCOIND, HMM_BITCOIN_QT };
+enum class HelpMessageMode { BITCOIND, BITCOIN_QT };
 
 /** Help for options shared between UI and daemon (for -help) */
 std::string HelpMessage(HelpMessageMode mode);
diff --git a/src/init.cpp b/src/init.cpp
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -349,7 +349,7 @@
     strUsage += HelpMessageOpt(
         "-conf=<file>", strprintf(_("Specify configuration file (default: %s)"),
                                   BITCOIN_CONF_FILENAME));
-    if (mode == HMM_BITCOIND) {
+    if (mode == HelpMessageMode::BITCOIND) {
 #if HAVE_DECL_DAEMON
         strUsage += HelpMessageOpt(
             "-daemon",
diff --git a/src/qt/utilitydialog.cpp b/src/qt/utilitydialog.cpp
--- a/src/qt/utilitydialog.cpp
+++ b/src/qt/utilitydialog.cpp
@@ -78,7 +78,7 @@
         cursor.insertText(header);
         cursor.insertBlock();
 
-        std::string strUsage = HelpMessage(HMM_BITCOIN_QT);
+        std::string strUsage = HelpMessage(HelpMessageMode::BITCOIN_QT);
         const bool showDebug = gArgs.GetBoolArg("-help-debug", false);
         strUsage += HelpMessageGroup(tr("UI Options:").toStdString());
         if (showDebug) {