diff --git a/src/sys.zig b/src/sys.zig
index 6962431..b880fef 100644
--- a/src/sys.zig
+++ b/src/sys.zig
@@ -377,11 +377,11 @@ pub const FileAccess = opaque {
     ///
     pub fn size(file_access: *FileAccess, event_loop: *EventLoop) FileError!usize {
         // Save cursor to return to it later.
-        const origin_cursor = try event_loop.tellFile(file_access);
+        const origin_cursor = try event_loop.queryFile(file_access);
 
         try event_loop.seekFile(file_access, .tail, 0);
 
-        const ending_cursor = try event_loop.tellFile(file_access);
+        const ending_cursor = try event_loop.queryFile(file_access);
 
         // Return to original cursor.
         try event_loop.seekFile(file_access, .head, origin_cursor);