diff --git a/sys/modules/cpufreq/Makefile b/sys/modules/cpufreq/Makefile
index 375500e5990d..be9e6b45791d 100644
--- a/sys/modules/cpufreq/Makefile
+++ b/sys/modules/cpufreq/Makefile
@@ -9,7 +9,7 @@ SRCS=	ichss.c
 SRCS+=	bus_if.h cpufreq_if.h device_if.h pci_if.h
 
 .if ${MACHINE} == "i386"
-SRCS+=	est.c
+SRCS+=	est.c p4tcc.c
 .endif
 
 .include <bsd.kmod.mk>