diff --git a/build/jam/BuildSetup b/build/jam/BuildSetup
index 4dbdd61cf9..7f63c30d34 100644
--- a/build/jam/BuildSetup
+++ b/build/jam/BuildSetup
@@ -1390,6 +1390,33 @@ if $(HAIKU_NO_WERROR) != 1 {
 	EnableWerror src kits textencoding ;
 #	EnableWerror src kits tracker ;
 	EnableWerror src kits translation ;
+	EnableWerror src preferences appearance ;
+	EnableWerror src preferences backgrounds ;
+	EnableWerror src preferences bluetooth ;
+	EnableWerror src preferences cpufrequency ;
+	EnableWerror src preferences datatranslations ;
+	EnableWerror src preferences deskbar ;
+#	EnableWerror src preferences filetypes ;
+	EnableWerror src preferences fonts ;
+	EnableWerror src preferences joysticks ;
+	EnableWerror src preferences keyboard ;
+#	EnableWerror src preferences keymap ;
+	EnableWerror src preferences locale ;
+	EnableWerror src preferences mail ;
+	EnableWerror src preferences media ;
+	EnableWerror src preferences mouse ;
+	EnableWerror src preferences network ;
+#	EnableWerror src preferences notifications ;
+	EnableWerror src preferences opengl ;
+	EnableWerror src preferences print ;
+	EnableWerror src preferences screen ;
+	EnableWerror src preferences screensaver ;
+#	EnableWerror src preferences shortcuts ;
+	EnableWerror src preferences sounds ;
+	EnableWerror src preferences time ;
+	EnableWerror src preferences touchpad ;
+	EnableWerror src preferences tracker ;
+	EnableWerror src preferences virtualmemory ;
 	EnableWerror src servers app ;
 #	EnableWerror src servers bluetooth ;
 	EnableWerror src servers cddb_daemon ;
diff --git a/src/preferences/opengl/CapabilitiesView.cpp b/src/preferences/opengl/CapabilitiesView.cpp
index abf0494ced..a2fea4d4d8 100644
--- a/src/preferences/opengl/CapabilitiesView.cpp
+++ b/src/preferences/opengl/CapabilitiesView.cpp
@@ -69,8 +69,6 @@ CapabilitiesView::CapabilitiesView()
 	SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
 	SetLayout(new BGroupLayout(B_VERTICAL));
 
-	BRect dummyRect(0, 0, 0, 0);
-
 	const float kInset = 10;
 
 	int lights = 0;