diff --git a/common/content/buffer.js b/common/content/buffer.js
index 6a030a2b..f9e73458 100644
--- a/common/content/buffer.js
+++ b/common/content/buffer.js
@@ -1418,7 +1418,13 @@ var Buffer = Module("buffer", {
 
         commands.add(["pa[geinfo]"],
             "Show various page information",
-            function (args) { buffer.showPageInfo(true, args[0]); },
+            function (args) {
+                let arg = args[0];
+                let opt = options.get("pageinfo");
+
+                dactyl.assert(opt.validator(opt.parse(arg)), "E475: Invalid argument: " + arg);
+                buffer.showPageInfo(true, arg);
+            },
             {
                 argCount: "?",
                 completer: function (context) {
diff --git a/common/locale/en-US/options.xml b/common/locale/en-US/options.xml
index c289a974..5016950d 100644
--- a/common/locale/en-US/options.xml
+++ b/common/locale/en-US/options.xml
@@ -327,6 +327,7 @@
 
 <item>
     <tags>'act' 'activate'</tags>
+    <strut/>
     <spec>'activate' 'act'</spec>
     <type>stringlist</type>
     <default>addons,bookmarks,diverted,downloads,extoptions,
@@ -852,6 +853,7 @@
 
 <item>
     <tags>'ht' 'hinttags'</tags>
+    <strut/>
     <spec>'hinttags' 'ht'</spec>
     <type>string</type>
     <default>&hinttags;</default>
@@ -1060,6 +1062,7 @@
 
 <item>
     <tags>'nextpattern'</tags>
+    <strut/>
     <spec>'nextpattern'</spec>
     <type>stringlist</type>
     <default>'\bnext',^>$,'^(>>|»)$','^(>|»)','(>|»)$','\bmore\b'</default>
@@ -1163,6 +1166,7 @@
 
 <item>
     <tags>'previouspattern'</tags>
+    <strut/>
     <spec>'previouspattern'</spec>
     <type>stringlist</type>
     <default><![CDATA['\bprev|previous\b',^<$,'^(<<|«)$','^(<|«)','(<|«)$']]></default>
@@ -1462,6 +1466,7 @@
 
 <item>
     <tags>'wia' 'wildanchor'</tags>
+    <strut/>
     <spec>'wildanchor' 'wia'</spec>
     <type>regexplist</type>
     <default>!'/ex/(back|buffer|ext|forward|help|undo)'</default>