diff --git a/phpBB/adm/style/acp_styles.html b/phpBB/adm/style/acp_styles.html
index 485920576a..8ac3e0c96b 100644
--- a/phpBB/adm/style/acp_styles.html
+++ b/phpBB/adm/style/acp_styles.html
@@ -330,7 +330,7 @@
 				</dl>
 				<dl>
 					<dt><label for="font_size">{L_FONT_SIZE}:</label></dt>
-					<dd><input id="font_size" name="font_size" type="text" value="{FONT_SIZE}" size="3" maxlength="3" /> <select id="font_size_unit" name="font_size_unit">{S_FONT_SIZE_UNITS}</select></dd>
+					<dd><input id="font_size" name="font_size" type="text" value="{FONT_SIZE}" size="5" maxlength="5" /> <select id="font_size_unit" name="font_size_unit">{S_FONT_SIZE_UNITS}</select></dd>
 				</dl>
 				<dl>
 					<dt><label for="font_weight">{L_BOLD}:</label></dt>