diff --git a/CMakeLists.txt b/CMakeLists.txt
index bf0e045a6..1fbded71b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -404,6 +404,7 @@ else()
     set(DFHACK_TINYXML "dfhack-tinyxml")
 endif()
 
+include_directories(depends/lodepng)
 include_directories(depends/tthread)
 include_directories(${ZLIB_INCLUDE_DIRS})
 include_directories(depends/clsocket/src)