diff --git a/repos/gems/src/test/tiled_wm/app/app.pro b/repos/gems/src/test/tiled_wm/app/app.pro
index 0953a7bf26..c3c3b64c40 100644
--- a/repos/gems/src/test/tiled_wm/app/app.pro
+++ b/repos/gems/src/test/tiled_wm/app/app.pro
@@ -5,3 +5,5 @@ CONFIG    += c++2a
 SOURCES   += main.cpp app.cpp
 HEADERS   += app.h ../util.h
 RESOURCES  = app.qrc
+
+INCLUDEPATH = ..
diff --git a/repos/gems/src/test/tiled_wm/overlay/overlay.pro b/repos/gems/src/test/tiled_wm/overlay/overlay.pro
index 5f06b5e8ea..a743fe6927 100644
--- a/repos/gems/src/test/tiled_wm/overlay/overlay.pro
+++ b/repos/gems/src/test/tiled_wm/overlay/overlay.pro
@@ -5,3 +5,5 @@ CONFIG    += c++2a
 SOURCES   += main.cpp overlay.cpp
 HEADERS   += overlay.h ../util.h
 RESOURCES  = overlay.qrc
+
+INCLUDEPATH = ..
diff --git a/repos/gems/src/test/tiled_wm/panel/panel.pro b/repos/gems/src/test/tiled_wm/panel/panel.pro
index 40b1fe3d5a..a803db8416 100644
--- a/repos/gems/src/test/tiled_wm/panel/panel.pro
+++ b/repos/gems/src/test/tiled_wm/panel/panel.pro
@@ -5,3 +5,5 @@ CONFIG    += c++2a
 SOURCES   += main.cpp panel.cpp
 HEADERS   += panel.h icon.h ../util.h
 RESOURCES  = panel.qrc
+
+INCLUDEPATH = ..
diff --git a/repos/gems/src/test/tiled_wm/target.inc b/repos/gems/src/test/tiled_wm/target.inc
index 258fdcad73..de6ed49956 100644
--- a/repos/gems/src/test/tiled_wm/target.inc
+++ b/repos/gems/src/test/tiled_wm/target.inc
@@ -8,8 +8,6 @@ QT5_GENODE_LIBS_APP += ld.lib.so
 
 qmake_prepared.tag: $(addprefix build_dependencies/lib/,$(QT5_GENODE_LIBS_APP))
 
-INC_DIR += $(PRG_DIR)/..
-
 #
 # We need Qt headers in a local directory for MOC to work correctly
 #