diff --git a/app/css/themes.css b/app/css/themes.css
index 1bcd5c62..0d5f6521 100644
--- a/app/css/themes.css
+++ b/app/css/themes.css
@@ -43,7 +43,7 @@
     --emphasized:#4e342e;
     --his-data:rgba(13, 19, 81,0.8);
     --active:#757575;
-    --post-box:#1a237e;
+    --postbox:#1a237e;
     --modalfooter:#031833;
 }
 .browntheme {