diff --git a/meta/recipes-core/images/build-appliance-image.bb b/meta/recipes-core/images/build-appliance-image.bb
index 77d3b0d..a82dfdd 100644
--- a/meta/recipes-core/images/build-appliance-image.bb
+++ b/meta/recipes-core/images/build-appliance-image.bb
@@ -20,7 +20,7 @@ IMAGE_FSTYPES = "vmdk"
 
 inherit core-image
 
-SRCREV = "73cdebf60df225ee10f2eb215935be3b61e1b831"
+SRCREV ?= "73cdebf60df225ee10f2eb215935be3b61e1b831"
 SRC_URI = "git://git.yoctoproject.org/poky;protocol=git \
            file://Yocto_Build_Appliance.vmx \
            file://Yocto_Build_Appliance.vmxf \