diff --git a/BeefLibs/corlib/src/IO/BufferedStream.bf b/BeefLibs/corlib/src/IO/BufferedStream.bf
index 24c0afd4..a3d6048c 100644
--- a/BeefLibs/corlib/src/IO/BufferedStream.bf
+++ b/BeefLibs/corlib/src/IO/BufferedStream.bf
@@ -68,7 +68,7 @@ namespace System.IO
 
 		public override Result<int> TryRead(Span<uint8> data)
 		{
-			int spaceLeft = (.)(mBufferEnd - mPos);
+			int64 spaceLeft = (.)(mBufferEnd - mPos);
 			if (mPos < mBufferPos)
 				spaceLeft = 0;
 			if (data.Length <= spaceLeft)
@@ -83,9 +83,9 @@ namespace System.IO
 			var data;
 			if (spaceLeft > 0)
 			{
-				Internal.MemCpy(data.Ptr, mBuffer.Ptr + (mPos - mBufferPos), spaceLeft);
+				Internal.MemCpy(data.Ptr, mBuffer.Ptr + (mPos - mBufferPos), (.)spaceLeft);
 				mPos += spaceLeft;
-				data.RemoveFromStart(spaceLeft);
+				data.RemoveFromStart((.)spaceLeft);
 			}
 
 			if (mWriteDirtyPos >= 0)