diff --git a/OpenEphys.Onix1/IsExternalInit.cs b/OpenEphys.Onix1/IsExternalInit.cs
new file mode 100644
index 0000000..11f062f
--- /dev/null
+++ b/OpenEphys.Onix1/IsExternalInit.cs
@@ -0,0 +1,4 @@
+namespace System.Runtime.CompilerServices
+{
+    internal static class IsExternalInit { }
+}
diff --git a/OpenEphys.Onix1/NeuropixelsV2GainCorrection.cs b/OpenEphys.Onix1/NeuropixelsV2GainCorrection.cs
index 757898a..7afb95a 100644
--- a/OpenEphys.Onix1/NeuropixelsV2GainCorrection.cs
+++ b/OpenEphys.Onix1/NeuropixelsV2GainCorrection.cs
@@ -1,9 +1,4 @@
-namespace System.Runtime.CompilerServices
-{
-    internal static class IsExternalInit { }
-}
-
-namespace OpenEphys.Onix1
+namespace OpenEphys.Onix1
 {
     /// <summary>
     /// A struct to hold the gain correction value and the serial number from a Neuropixels 2.0 gain