diff --git a/tests/zfs-tests/tests/functional/block_cloning/block_cloning_copyfilerange_fallback_same_txg.ksh b/tests/zfs-tests/tests/functional/block_cloning/block_cloning_copyfilerange_fallback_same_txg.ksh
index a10545bc07..74c5a5bece 100755
--- a/tests/zfs-tests/tests/functional/block_cloning/block_cloning_copyfilerange_fallback_same_txg.ksh
+++ b/tests/zfs-tests/tests/functional/block_cloning/block_cloning_copyfilerange_fallback_same_txg.ksh
@@ -51,6 +51,7 @@ log_onexit cleanup
 log_must zpool create -o feature@block_cloning=enabled $TESTPOOL $DISKS
 
 log_must set_tunable64 TXG_TIMEOUT 5000
+log_must sync_pool $TESTPOOL true
 
 log_must dd if=/dev/urandom of=/$TESTPOOL/file bs=128K count=4
 log_must clonefile -f /$TESTPOOL/file /$TESTPOOL/clone 0 0 524288