diff --git a/app-emulation/xen-tools/metadata.xml b/app-emulation/xen-tools/metadata.xml
index 16f1b5da5c729..fb98e4a01835d 100644
--- a/app-emulation/xen-tools/metadata.xml
+++ b/app-emulation/xen-tools/metadata.xml
@@ -15,7 +15,6 @@
 	</maintainer>
 	<use>
 		<flag name="api">Build the C libxenapi bindings</flag>
-		<flag name="flask">Enable the Flask XSM module from NSA</flag>
 		<flag name="hvm">Enable support for hardware based virtualization (VT-x,AMD-v)</flag>
 		<flag name="ipxe">Enable ipxe support</flag>
 		<flag name="ovmf">Enable support to boot UEFI guest vm, needed by hvm</flag>