diff --git a/cddl/lib/libzpool/Makefile b/cddl/lib/libzpool/Makefile
index 045e13d71dbf..6d8d59f82114 100644
--- a/cddl/lib/libzpool/Makefile
+++ b/cddl/lib/libzpool/Makefile
@@ -11,7 +11,7 @@
 # LIST_SRCS
 .PATH: ${.CURDIR}/../../../sys/cddl/contrib/opensolaris/uts/common/os
 # ATOMIC_SRCS
-.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "ia64"
+.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "ia64" || ${MACHINE_ARCH} == "powerpc64"
 .PATH: ${.CURDIR}/../../../sys/cddl/contrib/opensolaris/common/atomic/${MACHINE_ARCH}
 ATOMIC_SRCS=	opensolaris_atomic.S
 .else