diff --git a/debian/changelog b/debian/changelog
index fcfb8d0..0366b55 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,8 +1,9 @@
 multistrap (2.1.19) experimental; urgency=low
 
   * Fix multiarch/unstable support for packages listings.
+  * Fix sprintf formatting for new multiarch warning string.
 
- -- Neil Williams <codehelp@debian.org>  Sat, 21 Apr 2012 14:45:49 +0100
+ -- Neil Williams <codehelp@debian.org>  Sat, 21 Apr 2012 14:53:22 +0100
 
 multistrap (2.1.18) experimental; urgency=low
 
diff --git a/multistrap b/multistrap
index 0fb6c4f..41f259f 100755
--- a/multistrap
+++ b/multistrap
@@ -1274,7 +1274,7 @@ sub cascade {
 		if (not exists $archchk{$req}) {
 			# Translators: %1 and %2 are the same value here - the erroneous architecture name
 			my $reqmsg = sprintf (_g("ERR: Misconfiguration in: 'architecture'. option. ".
-			"Packages of architecture=%1 requested but '%2' is not included in the multiarch=".
+			"Packages of architecture=%s requested but '%s' is not included in the multiarch=".
 			join (" ", @foreignarches) . " option.\n"), $req, $req);
 			warn $reqmsg;
 			die ("\n");