diff --git a/theme/formal_white/style/core.css b/theme/formal_white/style/core.css
index 9435a26341b..d005e4a6736 100644
--- a/theme/formal_white/style/core.css
+++ b/theme/formal_white/style/core.css
@@ -134,7 +134,7 @@ input[type="radio"] {
 
 .loginbox .loginform .form-input #username,
 .loginbox .loginform .form-input #password {
-    width: 50%;
+    width: 100%;
     color: #000;
 }