--- slim-1.3.6.orig/CMakeLists.txt
+++ slim-1.3.6/CMakeLists.txt
@@ -170,7 +170,7 @@
 	${X11_Xft_INCLUDE_PATH}
 	${X11_Xrender_INCLUDE_PATH}
 	${X11_Xrandr_INCLUDE_PATH}
-	${FREETYPE_INCLUDE_DIR_freetype2}
+	${FREETYPE_INCLUDE_DIRS}
 	${X11_Xmu_INCLUDE_PATH}
 	${ZLIB_INCLUDE_DIR}
 	${JPEG_INCLUDE_DIR}