diff --git a/src/Gui/FileDialog.cpp b/src/Gui/FileDialog.cpp
index b8848b2b07..98ea4e7601 100644
--- a/src/Gui/FileDialog.cpp
+++ b/src/Gui/FileDialog.cpp
@@ -49,7 +49,7 @@
 using namespace Gui;
 
 #if defined(FC_OS_LINUX)
-#define USE_QT_FILEDIALOG
+#undef USE_QT_FILEDIALOG
 #endif