diff --git a/CPP/7zip/7zip_gcc.mak b/CPP/7zip/7zip_gcc.mak
--- a/CPP/7zip/7zip_gcc.mak
+++ b/CPP/7zip/7zip_gcc.mak
@@ -265,6 +265,7 @@
   -sDISABLE_EXCEPTION_CATCHING=1 \
   -sMODULARIZE \
   -sEXPORT_NAME="SevenZipWasm" \
-  -sEXPORTED_RUNTIME_METHODS='["callMain", "FS", "MEMFS", "NODEFS", "WORKERFS"]' \
+  -sEXPORTED_RUNTIME_METHODS='["callMain", "FS", "MEMFS", "NODEFS", "WORKERFS", "stackSave", "stackRestore"]' \
+  -sEXPORT_ES6=1 \
   -lnodefs.js \
   -lworkerfs.js