Index: head/Mk/Uses/kmod.mk
===================================================================
--- head/Mk/Uses/kmod.mk
+++ head/Mk/Uses/kmod.mk
@@ -22,7 +22,7 @@
 .endif
 
 .if !exists(${SRC_BASE}/sys/Makefile)
-IGNORE=	requires kernel source files in ${SRC_BASE}
+IGNORE=	requires kernel source files in SRC_BASE=${SRC_BASE}
 .endif
 
 CATEGORIES+=	kld