diff --git a/crates/rio/src/compress_index.rs b/crates/rio/src/compress_index.rs
index 889f7d27e..fa03ce25a 100644
--- a/crates/rio/src/compress_index.rs
+++ b/crates/rio/src/compress_index.rs
@@ -110,7 +110,7 @@ impl Index {
                 io::ErrorKind::InvalidData,
                 format!(
                     "internal error: Earlier compressed received ({} > {})",
-                    latest.uncompressed_offset, uncompressed_offset
+                    latest.compressed_offset, compressed_offset
                 ),
             ));
         }