diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index 42793eef724..06ac18cca33 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -447,6 +447,7 @@ _cbb=		cbb
 _ciss=		ciss
 _cm=		cm
 _coff=		coff
+_cpufreq=	cpufreq
 _el=		el
 _em=		em
 _ep=		ep