diff --git a/sys/cddl/contrib/opensolaris/common/acl/acl_common.c b/sys/cddl/contrib/opensolaris/common/acl/acl_common.c
index e6b678079635..8d0cc85f341c 100644
--- a/sys/cddl/contrib/opensolaris/common/acl/acl_common.c
+++ b/sys/cddl/contrib/opensolaris/common/acl/acl_common.c
@@ -424,6 +424,7 @@ cacl_free(void *ptr, size_t size)
 #endif
 }
 
+#ifndef __FreeBSD__
 acl_t *
 acl_alloc(enum acl_type type)
 {
@@ -469,6 +470,7 @@ acl_free(acl_t *aclp)
 
 	cacl_free(aclp, sizeof (acl_t));
 }
+#endif
 
 static uint32_t
 access_mask_set(int haswriteperm, int hasreadperm, int isowner, int isallow)
diff --git a/sys/cddl/contrib/opensolaris/common/atomic/amd64/atomic.S b/sys/cddl/contrib/opensolaris/common/atomic/amd64/opensolaris_atomic.S
similarity index 100%
rename from sys/cddl/contrib/opensolaris/common/atomic/amd64/atomic.S
rename to sys/cddl/contrib/opensolaris/common/atomic/amd64/opensolaris_atomic.S
diff --git a/sys/cddl/contrib/opensolaris/common/atomic/i386/atomic.S b/sys/cddl/contrib/opensolaris/common/atomic/i386/opensolaris_atomic.S
similarity index 100%
rename from sys/cddl/contrib/opensolaris/common/atomic/i386/atomic.S
rename to sys/cddl/contrib/opensolaris/common/atomic/i386/opensolaris_atomic.S
diff --git a/sys/cddl/contrib/opensolaris/common/atomic/ia64/atomic.S b/sys/cddl/contrib/opensolaris/common/atomic/ia64/opensolaris_atomic.S
similarity index 100%
rename from sys/cddl/contrib/opensolaris/common/atomic/ia64/atomic.S
rename to sys/cddl/contrib/opensolaris/common/atomic/ia64/opensolaris_atomic.S
diff --git a/sys/cddl/contrib/opensolaris/common/atomic/sparc64/atomic.S b/sys/cddl/contrib/opensolaris/common/atomic/sparc64/opensolaris_atomic.S
similarity index 100%
rename from sys/cddl/contrib/opensolaris/common/atomic/sparc64/atomic.S
rename to sys/cddl/contrib/opensolaris/common/atomic/sparc64/opensolaris_atomic.S
diff --git a/sys/cddl/contrib/opensolaris/uts/common/zmod/crc32.c b/sys/cddl/contrib/opensolaris/uts/common/zmod/opensolaris_crc32.c
similarity index 100%
rename from sys/cddl/contrib/opensolaris/uts/common/zmod/crc32.c
rename to sys/cddl/contrib/opensolaris/uts/common/zmod/opensolaris_crc32.c
diff --git a/sys/modules/zfs/Makefile b/sys/modules/zfs/Makefile
index 7ac0237d59ee..4f399a8f3b32 100644
--- a/sys/modules/zfs/Makefile
+++ b/sys/modules/zfs/Makefile
@@ -28,7 +28,7 @@ SRCS+=	opensolaris_zone.c
 
 .if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "ia64" || ${MACHINE_ARCH} == "sparc64"
 .PATH:	${SUNW}/common/atomic/${MACHINE_ARCH}
-SRCS+=	atomic.S
+SRCS+=	opensolaris_atomic.S
 .else
 .PATH:	${.CURDIR}/../../cddl/compat/opensolaris/kern
 SRCS+=	opensolaris_atomic.c
@@ -51,7 +51,7 @@ SRCS+=	xdr_mem.c
 
 .PATH:	${SUNW}/uts/common/zmod
 SRCS+=	adler32.c
-SRCS+=	crc32.c
+SRCS+=	opensolaris_crc32.c
 SRCS+=	deflate.c
 SRCS+=	inffast.c
 SRCS+=	inflate.c