diff --git a/css/admin.css b/css/admin.css
index 8ea61f2c1..13cdd831e 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 c84faff04..2390370f3 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 a8c2a5311..ca6a9f4be 100644
--- a/css/mobile.css
+++ b/css/mobile.css
@@ -1,3 +1,4 @@
+@charset "utf-8";
 /* SIR 지운아빠 */
 
 /* 초기화 */