diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index ea84b544f8fc..5dde58a9cfcc 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -764,6 +764,7 @@ _cardbus=	cardbus
 _cbb=		cbb
 _cfi=		cfi
 _cpufreq=	cpufreq
+_exca=		exca
 _nvram=		powermac_nvram
 _pccard=	pccard
 _smbfs=		smbfs