diff --git a/layers/meta-belden-coreos-bsp/classes/coreos-efi-secureboot.bbclass b/layers/meta-belden-coreos-bsp/classes/coreos-efi-secureboot.bbclass
index d95beeb..cd54553 100644
--- a/layers/meta-belden-coreos-bsp/classes/coreos-efi-secureboot.bbclass
+++ b/layers/meta-belden-coreos-bsp/classes/coreos-efi-secureboot.bbclass
@@ -41,10 +41,11 @@ def get_coreos_secureboot_keydir_hash(d):
     keydir = d.getVar('COREOS_EFI_SECUREBOOT_KEYDIR')
     value = ""
     
-    for filepath in os.listdir(keydir):
+    for keyname in os.listdir(keydir):
+        filepath = os.path.join(keydir, keyname)
         if os.path.isfile(filepath): 
             md5 = bb.utils.md5_file(filepath)
-            value += f"{filepath}:md5:{md5} "
+            value += f"{keyname}:md5:{md5} "
 
     return value