diff --git a/CMakeLists.txt b/CMakeLists.txt
index 69112f8..44bcedf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,7 +133,8 @@ set_target_properties(${TWN_TARGET} PROPERTIES
 # precompile commonly used not-so-small headers
 target_precompile_headers(${TWN_TARGET} PRIVATE
         $<$<NOT:$<BOOL:${EMSCRIPTEN}>>:third-party/glad/include/glad/glad.h>
-        ${SDL2_INCLUDE_DIR}/SDL.h)
+        ${SDL2_INCLUDE_DIR}/SDL.h
+        third-party/physfs/src/physfs.h)
 
 
 function(give_options_without_warnings target)