diff --git a/Adler32Context.cs b/Adler32Context.cs
index 9c11c1686..00b582506 100644
--- a/Adler32Context.cs
+++ b/Adler32Context.cs
@@ -33,6 +33,7 @@
 using System.IO;
 using System.Text;
 using Aaru.CommonTypes.Interfaces;
+using Aaru.Helpers;
 
 namespace Aaru.Checksums
 {
diff --git a/CDChecksums.cs b/CDChecksums.cs
index 9ad468a25..a6829bd3b 100644
--- a/CDChecksums.cs
+++ b/CDChecksums.cs
@@ -34,6 +34,7 @@
 using System;
 using System.Collections.Generic;
 using Aaru.Console;
+using Aaru.Helpers;
 
 namespace Aaru.Checksums
 {
diff --git a/CRC16Context.cs b/CRC16Context.cs
index ebc2aa32f..aa59f88a2 100644
--- a/CRC16Context.cs
+++ b/CRC16Context.cs
@@ -34,6 +34,7 @@ using System.IO;
 using System.Linq;
 using System.Text;
 using Aaru.CommonTypes.Interfaces;
+using Aaru.Helpers;
 
 namespace Aaru.Checksums
 {
diff --git a/CRC32Context.cs b/CRC32Context.cs
index b7531a622..a6bc6834f 100644
--- a/CRC32Context.cs
+++ b/CRC32Context.cs
@@ -33,6 +33,7 @@
 using System.IO;
 using System.Text;
 using Aaru.CommonTypes.Interfaces;
+using Aaru.Helpers;
 
 namespace Aaru.Checksums
 {
diff --git a/CRC64Context.cs b/CRC64Context.cs
index a12e5ca18..a161a5f6a 100644
--- a/CRC64Context.cs
+++ b/CRC64Context.cs
@@ -33,6 +33,7 @@
 using System.IO;
 using System.Text;
 using Aaru.CommonTypes.Interfaces;
+using Aaru.Helpers;
 
 namespace Aaru.Checksums
 {
diff --git a/FletcherContext.cs b/FletcherContext.cs
index d4cb4a83d..a55d88a2c 100644
--- a/FletcherContext.cs
+++ b/FletcherContext.cs
@@ -35,6 +35,7 @@
 using System.IO;
 using System.Text;
 using Aaru.CommonTypes.Interfaces;
+using Aaru.Helpers;
 
 namespace Aaru.Checksums
 {