diff --git a/src/Sherlog/Logger.cs b/src/Sherlog/Logger.cs
index 8ed6f9d..4a73f2b 100644
--- a/src/Sherlog/Logger.cs
+++ b/src/Sherlog/Logger.cs
@@ -1,5 +1,3 @@
-using System;
-
 namespace Sherlog
 {
     public delegate void LogDelegate(Logger logger, LogLevel logLevel, string message);
@@ -38,9 +36,4 @@ void Log(LogLevel logLvl, string message)
 
         public void Reset() => OnLog = null;
     }
-
-    public class SherlogAssertException : Exception
-    {
-        public SherlogAssertException(string message) : base(message) { }
-    }
 }
diff --git a/src/Sherlog/SherlogAssertException.cs b/src/Sherlog/SherlogAssertException.cs
new file mode 100644
index 0000000..92fef49
--- /dev/null
+++ b/src/Sherlog/SherlogAssertException.cs
@@ -0,0 +1,9 @@
+using System;
+
+namespace Sherlog
+{
+    public class SherlogAssertException : Exception
+    {
+        public SherlogAssertException(string message) : base(message) { }
+    }
+}