diff --git a/sources/qetapp.cpp b/sources/qetapp.cpp
index 0b3d0c91a..a9180e42a 100644
--- a/sources/qetapp.cpp
+++ b/sources/qetapp.cpp
@@ -958,6 +958,7 @@ void QETApp::useSystemPalette(bool use) {
 					"QTabBar::tab:!selected { background-color: transparent; }"
 					"QMainWindow{ background-color: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 rgb(43, 75, 116), stop:1 rgb(197, 245, 254)); }"
 					"QListView{ background-color: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 rgb(43, 75, 116), stop:1 rgb(130, 160, 210)); }"
+					"QTreeView{background-color: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 rgb(43, 75, 116), stop:1 rgb(197, 245, 254)); }"
 					"QAbstractScrollArea#mdiarea {"
 
 			"	background-color -> setPalette(initial_palette_);"