diff --git a/scripts/run-regression-tests b/scripts/run-regression-tests
index 7fb0575ce..ff13fa8ee 100755
--- a/scripts/run-regression-tests
+++ b/scripts/run-regression-tests
@@ -78,14 +78,8 @@ function extract_kernel_tree {
   mkdir "${tmpdir}" || return $?
   (
     cd "${tmpdir}" || return $?
-    tar xjf "${kernel_sources}/linux-${kver}.tar.bz2" || return $?
-    cd "linux-${kver}" || return $?
-    if [ "${plevel}" != "" ]; then
-      bzip2 -cd "${kernel_sources}/patch-$1.bz2" \
-        | patch -p1 -f -s || return $?
-    fi
-    cd ..
-    mv "linux-${kver}" "../linux-$1" || return $?
+    tar xaf "${kernel_sources}/linux-$1.tar.xz" || return $?
+    mv "linux-$1" ".." || return $?
     if [ "$1" = "2.6.29" -o "$1" = "2.6.29.1" -o "$1" = "2.6.29.2" -o "$1" = "2.6.29.3" ]
     then
       cd "../linux-$1" || return $?
@@ -288,13 +282,9 @@ function download_kernel {
   test -w "${kernel_sources}" || return $?
   (
     cd "${kernel_sources}" || return $?
-    download_file "${kernel_mirror}/v$series/linux-$kver.tar.bz2" \
+    download_file "${kernel_mirror}/v$series/linux-$1.tar.xz" \
+      || download_file "${kernel_mirror}/v$series/longterm/v${kver}/linux-$1.tar.xz" \
       || return $?
-    if [ "${plevel}" != "" ]; then
-      download_file "${kernel_mirror}/v$series/patch-$1.bz2" \
-        || download_file "${kernel_longterm}/v$series/longterm/patch-$1.bz2" \
-        || return $?
-    fi
   )
 }