diff --git a/sim/wasm/build.sh b/sim/wasm/build.sh
index f284a02892104f3a9a0f2de63c44e5ce52958fe5..28aa248919e7e950f812c7a6a19bff384aa51fe8 100755
--- a/sim/wasm/build.sh
+++ b/sim/wasm/build.sh
@@ -17,6 +17,7 @@ fi
 emcc ctx.c \
     -I ../../components/ctx/ \
     -I ../../components/ctx/fonts/ \
+    -I ../../build/config \
     -s EXPORTED_FUNCTIONS=_ctx_new_for_framebuffer,_ctx_new_drawlist,_ctx_parse,_ctx_apply_transform,_ctx_text_width,_ctx_render_ctx,_ctx_destroy,_malloc,_free \
     --no-entry -flto -O3 \
     -o ctx.wasm