diff --git a/kdesvn-build b/kdesvn-build
index 2c0ee90..4bc4a88 100755
--- a/kdesvn-build
+++ b/kdesvn-build
@@ -353,7 +353,9 @@ sub get_log_dir
 sub blacklisted
 {
     my ($module, $option) = @_;
-    my @unsermake_ban_list = qw/kde-common qt-copy kdebindings/; # Known to not work.
+
+    # Known to not work.
+    my @unsermake_ban_list = qw/valgrind kde-common qt-copy kdebindings/;
 
     if ($option eq 'use-unsermake')
     {