diff --git a/StgSharp.Common/HighPerformance/ProcessorAbstraction/M64.cs b/StgSharp.Common/HighPerformance/ProcessorAbstraction/M64.cs
index 02ddd0a7..edfb7721 100644
--- a/StgSharp.Common/HighPerformance/ProcessorAbstraction/M64.cs
+++ b/StgSharp.Common/HighPerformance/ProcessorAbstraction/M64.cs
@@ -91,7 +91,7 @@ namespace StgSharp.HighPerformance.ProcessorAbstraction
                     ulong bits
         )
         {
-            value = (value & (~(1UL << bitCount))) | (bits & (1UL << bitCount);
+            value = (value & (~(1UL << bitCount))) | (bits & (1UL << bitCount));
         }
 
         public static bool operator !=(