diff --git a/theme.inc b/theme.inc
index 6216549..0e097cf 100644
--- a/theme.inc
+++ b/theme.inc
@@ -255,7 +255,7 @@ function views_calc_table_total(&$vars, $key, $totals) {
     else {
       $query_alias = $field->field_alias;
     }
-    $baserow->{$query_alias} = $totals->{$query_alias};
+    $baserow->{$query_alias} = isset($totals->{$query_alias}) ? $totals->{$query_alias} : '';
   }
   // Build aggregation rows, one per function.
   foreach ($view->views_calc_fields as $calc => $calc_fields) {