Index: sys/dev/random/random_harvestq.c
===================================================================
--- sys/dev/random/random_harvestq.c
+++ sys/dev/random/random_harvestq.c
@@ -306,6 +306,7 @@
 	[RANDOM_PURE_BROADCOM] = "PURE_BROADCOM",
 	/* "ENTROPYSOURCE" */
 };
+CTASSERT(nitems(random_source_descr) == ENTROPYSOURCE);
 
 /* ARGSUSED */
 static int