diff --git a/tests/manual/diaglib/diaglib.pri b/tests/manual/diaglib/diaglib.pri
index 9bcf0317a6..e3e7c3757c 100644
--- a/tests/manual/diaglib/diaglib.pri
+++ b/tests/manual/diaglib/diaglib.pri
@@ -2,15 +2,13 @@ INCLUDEPATH += $$PWD
 SOURCES += \
     $$PWD/textdump.cpp \
     $$PWD/eventfilter.cpp \
-    $$PWD/qwindowdump.cpp \
-    $$PWD/debugproxystyle.cpp
+    $$PWD/qwindowdump.cpp
 
 HEADERS += \
     $$PWD/textdump.h \
     $$PWD/eventfilter.h \
     $$PWD/qwindowdump.h \
-    $$PWD/nativewindowdump.h \
-    $$PWD/debugproxystyle.h
+    $$PWD/nativewindowdump.h
 
 win32 {
     SOURCES += $$PWD/nativewindowdump_win.cpp
@@ -24,19 +22,23 @@ greaterThan(QT_MAJOR_VERSION, 4) {
     contains(QT, widgets) {
         HEADERS += \
             $$PWD/qwidgetdump.h \
+            $$PWD/debugproxystyle.h \
             $$PWD/logwidget.h
 
         SOURCES += \
             $$PWD/qwidgetdump.cpp \
+            $$PWD/debugproxystyle.cpp \
             $$PWD/logwidget.cpp
     }
 } else {
     HEADERS += \
         $$PWD/qwidgetdump.h \
+        $$PWD/debugproxystyle.h \
         $$PWD/logwidget.h
 
     SOURCES += \
         $$PWD/qwidgetdump.cpp \
+        $$PWD/debugproxystyle.cpp \
         $$PWD/logwidget.cpp
 }