diff --git a/src/widgets/dapplication.cpp b/src/widgets/dapplication.cpp
index 1c4044da..f05ab203 100644
--- a/src/widgets/dapplication.cpp
+++ b/src/widgets/dapplication.cpp
@@ -561,8 +561,6 @@ DApplication::DApplication(int &argc, char **argv) :
     QApplication(argc, argv),
     DObject(*new DApplicationPrivate(this))
 {
-    qputenv("QT_QPA_PLATFORM", QByteArray());
-
     // FIXME: fix bug in nvidia prime workaround, do not know effoct, must test more!!!
     // 在龙芯和申威上，xcb插件中加载glx相关库（r600_dri.so等）会额外耗时1.xs（申威应该更长）
     if (