diff --git a/dist-build/emscripten.sh b/dist-build/emscripten.sh
index a7c8e8f5..d4b09b9d 100755
--- a/dist-build/emscripten.sh
+++ b/dist-build/emscripten.sh
@@ -54,7 +54,7 @@ else
   echo
   exit 1
 fi
-export JS_EXPORTS_FLAGS="-s EXPORTED_FUNCTIONS=${EXPORTED_FUNCTIONS} -s EXTRA_EXPORTED_RUNTIME_METHODS=[\"Pointer_stringify\"]"
+export JS_EXPORTS_FLAGS="-s EXPORTED_FUNCTIONS=${EXPORTED_FUNCTIONS} -s EXTRA_EXPORTED_RUNTIME_METHODS=[\"Pointer_stringify\",\"_malloc\",\"_free\"]"
 
 rm -f "$DONE_FILE"