diff --git a/rpcs3/rpcs3qt/msg_dialog_frame.cpp b/rpcs3/rpcs3qt/msg_dialog_frame.cpp
index b42d83da58..84dbcd51d7 100644
--- a/rpcs3/rpcs3qt/msg_dialog_frame.cpp
+++ b/rpcs3/rpcs3qt/msg_dialog_frame.cpp
@@ -101,14 +101,14 @@ void msg_dialog_frame::Create(const std::string& msg, const std::string& title)
 		connect(m_button_yes, &QAbstractButton::clicked, [this]()
 		{
 			g_last_user_response = CELL_MSGDIALOG_BUTTON_YES;
-			on_close(CELL_MSGDIALOG_BUTTON_YES);
+			if (on_close) on_close(CELL_MSGDIALOG_BUTTON_YES);
 			m_dialog->accept();
 		});
 
 		connect(m_button_no, &QAbstractButton::clicked, [this]()
 		{
 			g_last_user_response = CELL_MSGDIALOG_BUTTON_NO;
-			on_close(CELL_MSGDIALOG_BUTTON_NO);
+			if (on_close) on_close(CELL_MSGDIALOG_BUTTON_NO);
 			m_dialog->accept();
 		});
 	}
@@ -133,7 +133,7 @@ void msg_dialog_frame::Create(const std::string& msg, const std::string& title)
 		connect(m_button_ok, &QAbstractButton::clicked, [this]()
 		{
 			g_last_user_response = CELL_MSGDIALOG_BUTTON_OK;
-			on_close(CELL_MSGDIALOG_BUTTON_OK);
+			if (on_close) on_close(CELL_MSGDIALOG_BUTTON_OK);
 			m_dialog->accept();
 		});
 	}
@@ -145,7 +145,7 @@ void msg_dialog_frame::Create(const std::string& msg, const std::string& title)
 		if (!type.disable_cancel)
 		{
 			g_last_user_response = CELL_MSGDIALOG_BUTTON_ESCAPE;
-			on_close(CELL_MSGDIALOG_BUTTON_ESCAPE);
+			if (on_close) on_close(CELL_MSGDIALOG_BUTTON_ESCAPE);
 		}
 	});