diff --git a/sys/modules/tpm/Makefile b/sys/modules/tpm/Makefile
index d929649d40f..e7a87a22d2e 100644
--- a/sys/modules/tpm/Makefile
+++ b/sys/modules/tpm/Makefile
@@ -17,7 +17,7 @@ SRCS+=	tpm20.c tpm_tis_core.c
 .if defined(${OPT_FDT})
 SRCS+=  tpm_spibus.c tpm_tis_spibus.c spibus_if.h
 .endif
-.if ${MACHINE_ARCH:Namd64:Ni386:Narm64} == ""
+.if ${MACHINE_ARCH:Namd64:Ni386:Naarch64} == ""
 SRCS+= acpi_if.h
 SRCS+= tpm_tis_acpi.c
 SRCS+= tpm_crb.c