diff --git a/superset/assets/visualizations/table.js b/superset/assets/visualizations/table.js
index 6e5392b1f5..0d642333b4 100644
--- a/superset/assets/visualizations/table.js
+++ b/superset/assets/visualizations/table.js
@@ -17,15 +17,10 @@ function tableVis(slice, payload) {
 
   const data = payload.data;
   const fd = slice.formData;
+
   // Removing metrics (aggregates) that are strings
-  const realMetrics = [];
   let metrics = fd.metrics || [];
-  for (const k in data.records[0]) {
-    if (metrics.indexOf(k) > -1 && !isNaN(data.records[0][k])) {
-      realMetrics.push(k);
-    }
-  }
-  metrics = realMetrics;
+  metrics = metrics.filter(m => !isNaN(data.records[0][m]));
 
   function col(c) {
     const arr = [];