diff --git a/poky/meta/classes/testimage.bbclass b/poky/meta/classes/testimage.bbclass
index 78da4b0..e613759 100644
--- a/poky/meta/classes/testimage.bbclass
+++ b/poky/meta/classes/testimage.bbclass
@@ -305,6 +305,7 @@
                       'dump_dir'    : d.getVar("TESTIMAGE_DUMP_DIR"),
                       'serial_ports': len(d.getVar("SERIAL_CONSOLES").split()),
                       'ovmf'        : ovmf,
+                      'tmpfsdir'    : d.getVar("RUNQEMU_TMPFS_DIR"),
                     }
 
     if d.getVar("TESTIMAGE_BOOT_PATTERNS"):