diff --git a/src/build.py b/src/build.py
index ff5c455d..06689294 100644
--- a/src/build.py
+++ b/src/build.py
@@ -164,6 +164,6 @@ def fix_comments(str):
 
 print("\n/*")
 for f in outro_files:
-    sys.stdout.write(open(f, 'r').read())
+    sys.stdout.write(open(f, 'r',encoding='utf-8').read())
 print("*/\n")