diff --git a/poky/meta/lib/oeqa/selftest/cases/kerneldevelopment.py b/poky/meta/lib/oeqa/selftest/cases/kerneldevelopment.py
index a61876e..b1623a1 100644
--- a/poky/meta/lib/oeqa/selftest/cases/kerneldevelopment.py
+++ b/poky/meta/lib/oeqa/selftest/cases/kerneldevelopment.py
@@ -58,7 +58,7 @@
         recipe_append = os.path.join(self.recipeskernel_dir, 'linux-yocto_%.bbappend')
         with open(recipe_append, 'w+') as fh:
             fh.write('SRC_URI += "file://%s"\n' % patch_name)
-            fh.write('FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"')
+            fh.write('FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"')
 
         runCmd('bitbake virtual/kernel -c clean')
         runCmd('bitbake virtual/kernel -c patch')