diff --git a/gutenprint-foomaticppdupdate b/gutenprint-foomaticppdupdate
index b8b66e8..47958b8 100644
--- a/gutenprint-foomaticppdupdate
+++ b/gutenprint-foomaticppdupdate
@@ -55,7 +55,12 @@ def generate_ppd (ppdfile, printer, driver):
     return ppdobj
 
 def update_ppdfile (ppdfile):
-    ppd = cups.PPD (ppdfile)
+    try:
+        ppd = cups.PPD (ppdfile)
+    except RuntimeError:
+        # Invalid PPD in some way.
+        return
+
     attr = ppd.findAttr ("FoomaticIDs")
     if not attr:
         return
diff --git a/gutenprint.spec b/gutenprint.spec
index 89a817c..464d188 100644
--- a/gutenprint.spec
+++ b/gutenprint.spec
@@ -4,7 +4,7 @@
 Name:           gutenprint
 Summary:        Printer Drivers Package.
 Version:        5.2.3
-Release:        3%{?dist}
+Release:        4%{?dist}
 Group:          System Environment/Base
 URL:            http://gimp-print.sourceforge.net/
 Source0:        http://dl.sf.net/gimp-print/gutenprint-%{version}.tar.bz2
@@ -254,6 +254,10 @@ fi
 /bin/rm -f /var/cache/foomatic/*
 
 %changelog
+* Thu Jan 29 2009 Tim Waugh <twaugh@redhat.com> 5.2.3-4
+- When updating foomatic PPDs, don't give a traceback if some PPD is
+  not strictly conformant (bug #481397).
+
 * Sat Jan 10 2009 Tim Waugh <twaugh@redhat.com> 5.2.3-3
 - Don't use popen2 in the foomatic PPD update script.