diff --git a/classes/sdcard_image-rpi.bbclass b/classes/sdcard_image-rpi.bbclass
index 3b4f13f..6960aca 100644
--- a/classes/sdcard_image-rpi.bbclass
+++ b/classes/sdcard_image-rpi.bbclass
@@ -73,6 +73,7 @@ FATPAYLOAD ?= ""
 
 IMAGEDATESTAMP = "${@time.strftime('%Y.%m.%d',time.gmtime())}"
 IMAGE_CMD_rpi-sdimg[vardepsexclude] = "IMAGEDATESTAMP"
+IMAGE_CMD_rpi-sdimg[vardepsexclude] = "DATETIME"
 
 IMAGE_CMD_rpi-sdimg () {