diff --git a/src/rageshake/rageshake.ts b/src/rageshake/rageshake.ts
index 87e9752e80c..261cef51f58 100644
--- a/src/rageshake/rageshake.ts
+++ b/src/rageshake/rageshake.ts
@@ -385,7 +385,8 @@ export class IndexedDBLogStore {
                     return;
                 }
                 const newLines = cursor.value.lines;
-                lines += newLines;
+                // The query returns log chunks in reverse time order, so prepend this new chunk to the buffer.
+                lines = newLines + lines;
                 sizeSoFar += newLines.length;
 
                 // If we have now exceeded the size limit, stop.