diff --git a/binding.gyp b/binding.gyp
index 8ca16d1..6584496 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -6,6 +6,9 @@
         "src/string_conversion.cc",
         "src/keymapping.cc"
       ],
+      'cflags': [
+        '-O2', '-D_FORTIFY_SOURCE=2'
+      ],
       'msvs_configuration_attributes': {
         'SpectreMitigation': 'Spectre'
       },