diff --git a/libzio.spec b/libzio.spec
index f35bf27..06bc0f3 100644
--- a/libzio.spec
+++ b/libzio.spec
@@ -26,6 +26,7 @@ Group:          System/Libraries
 Url:            http://libzio.sourceforge.net/
 Source:         libzio-%{version}.tar.bz2
 Source1:        baselibs.conf
+# PATCH-FIX-UPSTREAM: handle fseek() correct for bzip2 and lzma/xz
 Patch0:         libzio-1.00.dif
 BuildRequires:  libbz2-devel
 BuildRequires:  zlib-devel