diff --git a/Swapping.cs b/Swapping.cs
index 4cbccea..75bec25 100644
--- a/Swapping.cs
+++ b/Swapping.cs
@@ -105,9 +105,9 @@ namespace DiscImageChef
 
         public static ulong Swap(ulong x)
         {
-            x = (x & 0x00000000FFFFFFFF) << 32 | (x & 0xFFFFFFFF00000000) >> 32;
-            x = (x & 0x0000FFFF0000FFFF) << 16 | (x & 0xFFFF0000FFFF0000) >> 16;
-            x = (x & 0x00FF00FF00FF00FF) << 8 | (x & 0xFF00FF00FF00FF00) >> 8;
+            x = ((x & 0x00000000FFFFFFFF) << 32) | ((x & 0xFFFFFFFF00000000) >> 32);
+            x = ((x & 0x0000FFFF0000FFFF) << 16) | ((x & 0xFFFF0000FFFF0000) >> 16);
+            x = ((x & 0x00FF00FF00FF00FF) << 8) | ((x & 0xFF00FF00FF00FF00) >> 8);
             return x;
         }