diff --git a/hledger-web/Handler/Common.hs b/hledger-web/Handler/Common.hs
index bed831cb9..8e7326e42 100644
--- a/hledger-web/Handler/Common.hs
+++ b/hledger-web/Handler/Common.hs
@@ -503,7 +503,9 @@ registerChartHtml itemss =
                [
                 $forall i <- reverse items
                  [#{dayToJsTimestamp $ triDate i}, #{triSimpleBalance i}],
+                []
                ],
+              []
              ],
              {
                xaxis: {