diff --git a/css/admin.css b/css/admin.css
index 44afb09d4..d27e4c4bc 100644
--- a/css/admin.css
+++ b/css/admin.css
@@ -1,3 +1,4 @@
+@charset "utf-8";
 /* SIR 지운아빠 */
 
 /* 초기화 */
diff --git a/css/default.css b/css/default.css
index 82f4aec55..76328b446 100644
--- a/css/default.css
+++ b/css/default.css
@@ -1,3 +1,4 @@
+@charset "utf-8";
 /* SIR 지운아빠 */
 
 /* 초기화 */
diff --git a/css/mobile.css b/css/mobile.css
index 34ba7de81..fa00b7eff 100644
--- a/css/mobile.css
+++ b/css/mobile.css
@@ -1,3 +1,4 @@
+@charset "utf-8";
 /* SIR 지운아빠 */
 
 /* 초기화 */