diff --git a/common/qubes_check_for_updates.sh b/common/qubes_check_for_updates.sh
index 038637a..abb1fd1 100755
--- a/common/qubes_check_for_updates.sh
+++ b/common/qubes_check_for_updates.sh
@@ -8,7 +8,7 @@ if ! [ -d "$DOM0_UPDATES_DIR" ]; then
 fi
 
 mkdir -p $DOM0_UPDATES_DIR/etc
-cp /etc/yum.conf $DOM0_UPDATES_DIR/etc/
+sed -i '/^reposdir\s*=/d' $DOM0_UPDATES_DIR/etc/yum.conf
 
 # check also for template updates
 echo "Checking for template updates..." >&2
diff --git a/common/qubes_download_dom0_updates.sh b/common/qubes_download_dom0_updates.sh
index 132a161..eb2b229 100755
--- a/common/qubes_download_dom0_updates.sh
+++ b/common/qubes_download_dom0_updates.sh
@@ -34,7 +34,7 @@ if ! [ -d "$DOM0_UPDATES_DIR" ]; then
 fi
 
 mkdir -p $DOM0_UPDATES_DIR/etc
-cp /etc/yum.conf $DOM0_UPDATES_DIR/etc/
+sed -i '/^reposdir\s*=/d' $DOM0_UPDATES_DIR/etc/yum.conf
 
 if [ "x$CLEAN" = "1" ]; then
     yum $OPTS clean all