diff --git a/src/platform/commandline.c b/src/platform/commandline.c
index dfea7de7a..4e04277fa 100644
--- a/src/platform/commandline.c
+++ b/src/platform/commandline.c
@@ -36,7 +36,6 @@
 static const struct option _options[] = {
 	{ "bios",      required_argument, 0, 'b' },
 	{ "cheats",    required_argument, 0, 'c' },
-	{ "dirmode",   required_argument, 0, 'D' },
 	{ "frameskip", required_argument, 0, 's' },
 #ifdef USE_CLI_DEBUGGER
 	{ "debug",     no_argument, 0, 'd' },
@@ -56,7 +55,7 @@ static bool _parseGraphicsArg(struct SubParser* parser, struct GBAConfig* config
 bool parseArguments(struct GBAArguments* opts, struct GBAConfig* config, int argc, char* const* argv, struct SubParser* subparser) {
 	int ch;
 	char options[64] =
-		"b:c:Dhl:p:s:v:"
+		"b:c:hl:p:s:v:"
 #ifdef USE_CLI_DEBUGGER
 		"d"
 #endif
@@ -86,9 +85,6 @@ bool parseArguments(struct GBAArguments* opts, struct GBAConfig* config, int arg
 		case 'c':
 			opts->cheatsFile = strdup(optarg);
 			break;
-		case 'D':
-			opts->dirmode = true;
-			break;
 #ifdef USE_CLI_DEBUGGER
 		case 'd':
 			if (opts->debuggerType != DEBUGGER_NONE) {
diff --git a/src/platform/commandline.h b/src/platform/commandline.h
index 5f45f444a..737fab8cc 100644
--- a/src/platform/commandline.h
+++ b/src/platform/commandline.h
@@ -25,7 +25,6 @@ struct GBAArguments {
 	char* fname;
 	char* patch;
 	char* cheatsFile;
-	bool dirmode;
 	char* movie;
 
 	enum DebuggerType debuggerType;
diff --git a/src/platform/qt/GameController.cpp b/src/platform/qt/GameController.cpp
index 852bd3ffa..67a63a43d 100644
--- a/src/platform/qt/GameController.cpp
+++ b/src/platform/qt/GameController.cpp
@@ -281,26 +281,22 @@ void GameController::setDebugger(ARMDebugger* debugger) {
 }
 #endif
 
-void GameController::loadGame(const QString& path, bool dirmode) {
+void GameController::loadGame(const QString& path) {
 	closeGame();
-	if (!dirmode) {
-		QFile file(path);
-		if (!file.open(QIODevice::ReadOnly)) {
-			postLog(GBA_LOG_ERROR, tr("Failed to open game file: %1").arg(path));
-			return;
-		}
-		file.close();
+	QFile file(path);
+	if (!file.open(QIODevice::ReadOnly)) {
+		postLog(GBA_LOG_ERROR, tr("Failed to open game file: %1").arg(path));
+		return;
 	}
+	file.close();
 
 	m_fname = path;
-	m_dirmode = dirmode;
 	openGame();
 }
 
 void GameController::bootBIOS() {
 	closeGame();
 	m_fname = QString();
-	m_dirmode = false;
 	openGame(true);
 }
 
diff --git a/src/platform/qt/GameController.h b/src/platform/qt/GameController.h
index 4f118df27..adda42243 100644
--- a/src/platform/qt/GameController.h
+++ b/src/platform/qt/GameController.h
@@ -97,7 +97,7 @@ signals:
 	void postLog(int level, const QString& log);
 
 public slots:
-	void loadGame(const QString& path, bool dirmode = false);
+	void loadGame(const QString& path);
 	void loadBIOS(const QString& path);
 	void yankPak();
 	void replaceGame(const QString& path);
@@ -180,7 +180,6 @@ private:
 	int m_logLevels;
 
 	bool m_gameOpen;
-	bool m_dirmode;
 
 	QString m_fname;
 	QString m_bios;
diff --git a/src/platform/qt/Window.cpp b/src/platform/qt/Window.cpp
index 3b11f1f12..d5d8f30dd 100644
--- a/src/platform/qt/Window.cpp
+++ b/src/platform/qt/Window.cpp
@@ -180,7 +180,7 @@ void Window::argumentsPassed(GBAArguments* args) {
 	}
 
 	if (args->fname) {
-		m_controller->loadGame(args->fname, args->dirmode);
+		m_controller->loadGame(args->fname);
 	}
 }