diff --git a/src/components/modebar/manage.js b/src/components/modebar/manage.js
index 718a790f5e3..b11f97643e5 100644
--- a/src/components/modebar/manage.js
+++ b/src/components/modebar/manage.js
@@ -183,7 +183,7 @@ function getButtonGroups(gd) {
     // regardless of what other types are on the plot, since they'll all
     // just treat any truthy hovermode as 'closest'
     if(hasCartesian) {
-        hoverGroup = ['toggleSpikelines', 'hoverClosestCartesian', 'hoverCompareCartesian'];
+        hoverGroup.push('toggleSpikelines', 'hoverClosestCartesian', 'hoverCompareCartesian');
     }
     if(hasNoHover(fullData) || hasUnifiedHoverLabel) {
         hoverGroup = [];