diff --git a/configure b/configure
index 59f91ab3f9..a8498ab393 100755
--- a/configure
+++ b/configure
@@ -1588,7 +1588,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   virtfs          VirtFS
   mpath           Multipath persistent reservation passthrough
   xen             xen backend driver support
-  xen-pci-passthrough
+  xen-pci-passthrough    PCI passthrough support for Xen
   brlapi          BrlAPI (Braile)
   curl            curl connectivity
   membarrier      membarrier system call (for Linux 4.14+ or Windows)