diff --git a/GameRes/ArcStream.cs b/GameRes/ArcStream.cs
index 2e46608e..aade8d43 100644
--- a/GameRes/ArcStream.cs
+++ b/GameRes/ArcStream.cs
@@ -90,9 +90,9 @@ namespace GameRes
             Name = name ?? "";
         }
 
-        public ArcViewStream (ArcView file, long offset, uint size, string name = null)
+        public ArcViewStream (ArcView file, long offset, long size, string name = null)
         {
-            m_view = new ArcView.Frame (file, offset, Math.Min (size, MaxFrameSize));
+            m_view = new ArcView.Frame (file, offset, (uint)Math.Min (size, MaxFrameSize));
             m_start = offset;
             m_size = size;
             m_position = 0;
diff --git a/GameRes/ArcView.cs b/GameRes/ArcView.cs
index 4cd3a533..74ed9500 100644
--- a/GameRes/ArcView.cs
+++ b/GameRes/ArcView.cs
@@ -214,9 +214,11 @@ namespace GameRes
         public ArcViewStream CreateStream (long offset)
         {
             var size = this.MaxOffset - offset;
-            if (size > uint.MaxValue)
-                throw new ArgumentOutOfRangeException ("Too large memory mapped stream");
-            return new ArcViewStream (this, offset, (uint)size);
+            if (size < 0)
+            {
+                throw new ArgumentOutOfRangeException(nameof(offset), "Greater than archive size");
+            }
+            return new ArcViewStream (this, offset, size);
         }
 
         public ArcViewStream CreateStream (long offset, uint size, string name = null)