diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm
index 0606f5001..8888b3a56 100644
--- a/IkiWiki/Plugin/img.pm
+++ b/IkiWiki/Plugin/img.pm
@@ -51,6 +51,8 @@ sub preprocess (@) { #{{{
 
 		my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
 		$imglink = "$dir/${w}x${h}-$base";
+				
+		will_render($params{page}, $imglink);
 
 		if (-e $outfile && (-M srcfile($file) >= -M $outfile)) {
 			$r = $im->Read($outfile);
@@ -65,7 +67,6 @@ sub preprocess (@) { #{{{
 
 			# don't actually write file in preview mode
 			if (! $params{preview}) {
-				will_render($params{page}, $imglink);
 				my @blob = $im->ImageToBlob();
 				writefile($imglink, $config{destdir}, $blob[0], 1);
 			}
@@ -84,8 +85,8 @@ sub preprocess (@) { #{{{
 
 	my ($fileurl, $imgurl);
 	if (! $params{preview}) {
-		$fileurl=IkiWiki::abs2rel($file, IkiWiki::dirname($params{destpage}));
-		$imgurl=IkiWiki::abs2rel($imglink, IkiWiki::dirname($params{destpage}));
+		$fileurl=urlto($file, $params{destpage});
+		$imgurl=urlto($imglink, $params{destpage});
 	}
 	else {
 		$fileurl="$config{url}/$file";
diff --git a/debian/changelog b/debian/changelog
index 84f6a2b58..a19295619 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -17,6 +17,8 @@ ikiwiki (1.49) UNRELEASED; urgency=low
     on and supported creating it (especially Tumov). This adds a "usedirs"
     option that makes ikiwiki use foo/index.html instead of foo.html as
     output page names. It is not yet enabled by default.
+  * Fix a big in the img plugin that caused thumbnailed files to not be
+    tracked properly.
 
  -- Joey Hess <joeyh@debian.org>  Sun, 01 Apr 2007 15:37:17 -0400
 
diff --git a/po/ikiwiki.pot b/po/ikiwiki.pot
index 5de4356ee..757aec0b3 100644
--- a/po/ikiwiki.pot
+++ b/po/ikiwiki.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2007-04-01 16:00-0400\n"
+"POT-Creation-Date: 2007-04-01 16:43-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -132,13 +132,13 @@ msgstr ""
 msgid "bad size \"%s\""
 msgstr ""
 
-#: ../IkiWiki/Plugin/img.pm:57 ../IkiWiki/Plugin/img.pm:61
-#: ../IkiWiki/Plugin/img.pm:79
+#: ../IkiWiki/Plugin/img.pm:59 ../IkiWiki/Plugin/img.pm:63
+#: ../IkiWiki/Plugin/img.pm:80
 #, perl-format
 msgid "failed to read %s: %s"
 msgstr ""
 
-#: ../IkiWiki/Plugin/img.pm:64
+#: ../IkiWiki/Plugin/img.pm:66
 #, perl-format
 msgid "failed to resize: %s"
 msgstr ""