diff --git a/src/components/info/info.js b/src/components/info/info.js
index 05bc818c2..1e1304a31 100644
--- a/src/components/info/info.js
+++ b/src/components/info/info.js
@@ -70,7 +70,7 @@ export const createSummary = (mainTreeNumTips, nodes, filters, visibility, visib
   let summary = ""; /* text returned from this function */
 
   /* Number of genomes & their date range */
-  if (branchLengthsToDisplay !== "divOnly") {
+  if (branchLengthsToDisplay !== "divOnly" && nSelectedSamples > 0) {
     summary += t(
       "Showing {{x}} of {{y}} genomes sampled between {{from}} and {{to}}.",
       {
diff --git a/src/util/treeVisibilityHelpers.js b/src/util/treeVisibilityHelpers.js
index ac8fecfa6..96f024868 100644
--- a/src/util/treeVisibilityHelpers.js
+++ b/src/util/treeVisibilityHelpers.js
@@ -7,9 +7,7 @@ export const getVisibleDateRange = (nodes, visibility) => nodes
   .filter((node, idx) => (visibility[idx] === NODE_VISIBLE && !node.hasChildren))
   .reduce((acc, node) => {
     const nodeDate = getTraitFromNode(node, "num_date");
-    if (nodeDate && nodeDate < acc[0]) return [nodeDate, acc[1]];
-    if (nodeDate && nodeDate > acc[1]) return [acc[0], nodeDate];
-    return acc;
+    return nodeDate ? [Math.min(nodeDate, acc[0]), Math.max(nodeDate, acc[1])] : acc;
   }, [100000, -100000]);
 
 export const strainNameToIdx = (nodes, name) => {