diff --git a/meta/lib/oeqa/selftest/cases/runqemu.py b/meta/lib/oeqa/selftest/cases/runqemu.py
index e1093c67c7..3f8760a5ba 100644
--- a/meta/lib/oeqa/selftest/cases/runqemu.py
+++ b/meta/lib/oeqa/selftest/cases/runqemu.py
@@ -62,7 +62,8 @@ SYSLINUX_TIMEOUT = "10"
         cmd = "%s %s ext4" % (self.cmd_common, self.machine)
         with runqemu(self.recipe, ssh=False, launch_cmd=cmd) as qemu:
             with open(qemu.qemurunnerlog) as f:
-                self.assertIn('rootfs.ext4', f.read(), "Failed: %s" % cmd)
+                regexp = r'\nROOTFS: .*\.ext4]\n'
+                self.assertRegex(f.read(), regexp, "Failed to find '%s' in '%s' after running '%s'" % (regexp, qemu.qemurunnerlog, cmd))
 
     @skipIfNotArch(['i586', 'i686', 'x86_64'])
     def test_boot_machine_iso(self):