diff --git a/gyp/lua.gyp b/gyp/lua.gyp
index a8f1ba62f9..280b94c186 100644
--- a/gyp/lua.gyp
+++ b/gyp/lua.gyp
@@ -57,6 +57,9 @@
           '../third_party/lua/src/',
         ],
       },
+      'defines': [
+        "getlocaledecpoint()='.'"
+      ],
     },
   ],
 }
diff --git a/gyp/tools.gyp b/gyp/tools.gyp
index 6d95e10a90..aa27b45f62 100644
--- a/gyp/tools.gyp
+++ b/gyp/tools.gyp
@@ -15,7 +15,7 @@
       'dependencies': [
         'bench_pictures',
         'filter',
-#        'lua_pictures',
+        'lua_pictures',
         'pinspect',
         'render_pdfs',
         'render_pictures',