diff --git a/include/ntfs-3g/endians.h b/include/ntfs-3g/endians.h
index b69c2b47..58163a64 100644
--- a/include/ntfs-3g/endians.h
+++ b/include/ntfs-3g/endians.h
@@ -328,4 +328,6 @@
 
 #define le32_and(a, b) ((a) & (b))
 
+#define le64_and(a, b) ((a) & (b))
+
 #endif /* defined _NTFS_ENDIANS_H */
diff --git a/ntfsprogs/ntfsclone.c b/ntfsprogs/ntfsclone.c
index 850623f6..1a24b3b3 100644
--- a/ntfsprogs/ntfsclone.c
+++ b/ntfsprogs/ntfsclone.c
@@ -821,8 +821,8 @@ static void copy_cluster(int rescue, u64 rescue_lcn, u64 lcn)
 		else {
 			mask = const_cpu_to_le64(~0x0ffffffffULL);
 			bs->volume_serial_number
-			    = (volume_serial_number & mask)
-				| (bs->volume_serial_number & ~mask);
+			    = le64_and(volume_serial_number, mask)
+				| le64_and(bs->volume_serial_number, ~mask);
 		}
 			/* Show the new full serial after merging */
 		if (!lcn)
diff --git a/ntfsprogs/ntfslabel.c b/ntfsprogs/ntfslabel.c
index c0494ab5..bded47b4 100644
--- a/ntfsprogs/ntfslabel.c
+++ b/ntfsprogs/ntfslabel.c
@@ -258,8 +258,8 @@ static int change_serial(ntfs_volume *vol, u64 sector, le64 serial_number,
 			else {
 				mask = const_cpu_to_le64(~0x0ffffffffULL);
 				bs->volume_serial_number
-				    = (serial_number & mask)
-					| (bs->volume_serial_number & ~mask);
+				    = le64_and(serial_number, mask)
+					| le64_and(bs->volume_serial_number, ~mask);
 			}
 			if (opts.noaction
 			    || (ntfs_pwrite(vol->dev,