diff --git a/binding.gyp b/binding.gyp
index e105085..681d68c 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -13,7 +13,14 @@
       ],
       "cflags_c": [
         "-std=c99",
-      ]
+      ],
+      "msvs_settings": {
+        "VCCLCompilerTool": {
+          "AdditionalOptions": [
+            '-utf-8'
+          ],
+        },
+      }
     }
   ]
 }
diff --git a/bindings/rust/build.rs b/bindings/rust/build.rs
index f7aaf16..41d4559 100644
--- a/bindings/rust/build.rs
+++ b/bindings/rust/build.rs
@@ -6,7 +6,8 @@ fn main() {
     c_config
         .flag_if_supported("-Wno-unused-parameter")
         .flag_if_supported("-Wno-unused-but-set-variable")
-        .flag_if_supported("-Wno-trigraphs");
+        .flag_if_supported("-Wno-trigraphs")
+        .flag_if_supported("-utf-8");
     let parser_path = src_dir.join("parser.c");
     c_config.file(&parser_path);