diff --git a/IkiWiki/Plugin/po.pm b/IkiWiki/Plugin/po.pm
index 93cf6bbdf..552b6b51b 100644
--- a/IkiWiki/Plugin/po.pm
+++ b/IkiWiki/Plugin/po.pm
@@ -1291,4 +1291,19 @@ sub match_currentlang ($$;@) {
 	}
 }
 
+sub match_needstranslation ($$;@) {
+	my $page=shift;
+
+	my $percenttranslated=IkiWiki::Plugin::po::percenttranslated($page);
+	if ($percenttranslated eq 'N/A') {
+		return IkiWiki::FailReason->new("file is not a translation page");
+	}
+	elsif ($percenttranslated < 100) {
+		return IkiWiki::SuccessReason->new("file has $percenttranslated translated");
+        }
+	else {
+		return IkiWiki::FailReason->new("file is fully translated");
+	}
+}
+
 1
diff --git a/doc/ikiwiki/pagespec/po.mdwn b/doc/ikiwiki/pagespec/po.mdwn
index 40ed9efb6..f8b398575 100644
--- a/doc/ikiwiki/pagespec/po.mdwn
+++ b/doc/ikiwiki/pagespec/po.mdwn
@@ -11,6 +11,8 @@ wiki:
   specified as a ISO639-1 (two-letter) language code.
 * "`currentlang()`" - tests whether a page is written in the same
   language as the current page.
+* "`needstranslation()`" - tests whether a page needs translation
+  work. Only slave pages match this PageSpec.
 
 Note that every non-po page is considered to be written in
 `po_master_language`, as specified in `ikiwiki.setup`.