diff --git a/src/ProgressPane.jsx b/src/ProgressPane.jsx
index 0350488..3a0497f 100644
--- a/src/ProgressPane.jsx
+++ b/src/ProgressPane.jsx
@@ -40,8 +40,15 @@ async function fetchData(version) {
         })
 
     const latest = rows[rows.length - 1]
+
+    let totalBytes = latest.totalBytes
+    // TODO hack for JP since we haven't mapped all the segments
+    if (version !== "us") {
+        totalBytes = 3718668
+    }
+
     for (const row of rows) {
-        row.percentBytes = (row.matchingBytes / latest.totalBytes) * 100
+        row.percentBytes = (row.matchingBytes / totalBytes) * 100
     }
 
     return rows