diff --git a/background.html b/background.html
index a42c482..4f87819 100644
--- a/background.html
+++ b/background.html
@@ -1 +1 @@
-<html><body><script src="background-script.js" charset="UTF-8"></script><textarea id="nazeka-paste-target"></textarea></body></html>
+<html><head><meta charset="utf-8"/></head><body><script src="background-script.js" charset="UTF-8"></script><textarea id="nazeka-paste-target"></textarea></body></html>
diff --git a/reader.html b/reader.html
index f6bb93b..022f32a 100644
--- a/reader.html
+++ b/reader.html
@@ -1,5 +1,6 @@
 <html>
 <head>
+<meta charset="utf-8"/>
 <title>Text Grabber</title>
 <style>
 body