diff --git a/meta-oe/classes/fitimage.bbclass b/meta-oe/classes/fitimage.bbclass
index adcfec0f0e..109b3b421b 100644
--- a/meta-oe/classes/fitimage.bbclass
+++ b/meta-oe/classes/fitimage.bbclass
@@ -62,7 +62,7 @@
 #
 #    FITIMAGE_SIGN = "1"
 #    FITIMAGE_MKIMAGE_EXTRA_ARGS = "--engine pkcs11"
-#    FITIMAGE_SIGN_KEYDIR = "${PKCS11_URI}"
+#    FITIMAGE_SIGN_KEYDIR = "${PKCS11_URI#pkcs11:}"
 
 
 LICENSE ?= "MIT"