diff --git a/build/cmake/tests/gui/CMakeLists.txt b/build/cmake/tests/gui/CMakeLists.txt
index 0333a85731..d581676179 100644
--- a/build/cmake/tests/gui/CMakeLists.txt
+++ b/build/cmake/tests/gui/CMakeLists.txt
@@ -144,6 +144,8 @@ set(TEST_GUI_DATA
     horse.tga
     horse.tif
     horse.xpm
+    image/8bpp-colorsused-large.bmp
+    image/8bpp-colorsused-negative.bmp
     image/horse_grey.bmp
     image/horse_grey_flipped.bmp
     image/horse_rle4.bmp