diff --git a/include/os/freebsd/spl/acl/acl_common.h b/include/os/freebsd/spl/acl/acl_common.h
index 2b77bdb6ea..53b69154d6 100644
--- a/include/os/freebsd/spl/acl/acl_common.h
+++ b/include/os/freebsd/spl/acl/acl_common.h
@@ -47,7 +47,7 @@ extern int acltrivial(const char *);
 extern void adjust_ace_pair(ace_t *pair, mode_t mode);
 extern void adjust_ace_pair_common(void *, size_t, size_t, mode_t);
 extern int ace_trivial_common(void *, int,
-    uint64_t (*walk)(void *, uint64_t, int aclcnt, uint16_t *, uint16_t *,
+    uintptr_t (*walk)(void *, uintptr_t, int aclcnt, uint16_t *, uint16_t *,
     uint32_t *mask));
 #if !defined(_KERNEL)
 extern acl_t *acl_alloc(acl_type_t);
diff --git a/module/os/freebsd/spl/acl_common.c b/module/os/freebsd/spl/acl_common.c
index b692ccdf23..04a5d2869d 100644
--- a/module/os/freebsd/spl/acl_common.c
+++ b/module/os/freebsd/spl/acl_common.c
@@ -1654,13 +1654,13 @@ acl_trivial_create(mode_t mode, boolean_t isdir, ace_t **acl, int *count)
  */
 int
 ace_trivial_common(void *acep, int aclcnt,
-    uint64_t (*walk)(void *, uint64_t, int aclcnt,
+    uintptr_t (*walk)(void *, uintptr_t, int aclcnt,
     uint16_t *, uint16_t *, uint32_t *))
 {
 	uint16_t flags;
 	uint32_t mask;
 	uint16_t type;
-	uint64_t cookie = 0;
+	uintptr_t cookie = 0;
 
 	while ((cookie = walk(acep, cookie, aclcnt, &flags, &type, &mask))) {
 		switch (flags & ACE_TYPE_FLAGS) {
diff --git a/module/os/freebsd/zfs/zfs_acl.c b/module/os/freebsd/zfs/zfs_acl.c
index c075e180a8..16bcd338de 100644
--- a/module/os/freebsd/zfs/zfs_acl.c
+++ b/module/os/freebsd/zfs/zfs_acl.c
@@ -631,8 +631,8 @@ zfs_acl_next_ace(zfs_acl_t *aclp, void *start, uint64_t *who,
 	return (NULL);
 }
 
-static uint64_t
-zfs_ace_walk(void *datap, uint64_t cookie, int aclcnt,
+static uintptr_t
+zfs_ace_walk(void *datap, uintptr_t cookie, int aclcnt,
     uint16_t *flags, uint16_t *type, uint32_t *mask)
 {
 	(void) aclcnt;
@@ -642,7 +642,7 @@ zfs_ace_walk(void *datap, uint64_t cookie, int aclcnt,
 
 	acep = zfs_acl_next_ace(aclp, acep, &who, mask,
 	    flags, type);
-	return ((uint64_t)(uintptr_t)acep);
+	return ((uintptr_t)acep);
 }
 
 /*
diff --git a/module/os/linux/zfs/zfs_acl.c b/module/os/linux/zfs/zfs_acl.c
index d040344907..437169990f 100644
--- a/module/os/linux/zfs/zfs_acl.c
+++ b/module/os/linux/zfs/zfs_acl.c
@@ -629,18 +629,18 @@ zfs_acl_next_ace(zfs_acl_t *aclp, void *start, uint64_t *who,
 	return (NULL);
 }
 
-static uint64_t
-zfs_ace_walk(void *datap, uint64_t cookie, int aclcnt,
+static uintptr_t
+zfs_ace_walk(void *datap, uintptr_t cookie, int aclcnt,
     uint16_t *flags, uint16_t *type, uint32_t *mask)
 {
 	(void) aclcnt;
 	zfs_acl_t *aclp = datap;
-	zfs_ace_hdr_t *acep = (zfs_ace_hdr_t *)(uintptr_t)cookie;
+	zfs_ace_hdr_t *acep = (zfs_ace_hdr_t *)cookie;
 	uint64_t who;
 
 	acep = zfs_acl_next_ace(aclp, acep, &who, mask,
 	    flags, type);
-	return ((uint64_t)(uintptr_t)acep);
+	return ((uintptr_t)acep);
 }
 
 /*
@@ -1285,7 +1285,7 @@ acl_trivial_access_masks(mode_t mode, boolean_t isdir, trivial_acl_t *masks)
  */
 static int
 ace_trivial_common(void *acep, int aclcnt,
-    uint64_t (*walk)(void *, uint64_t, int aclcnt,
+    uintptr_t (*walk)(void *, uintptr_t, int,
     uint16_t *, uint16_t *, uint32_t *))
 {
 	uint16_t flags;