diff --git a/js/id/modes/select.js b/js/id/modes/select.js
index 26a1fa51f..393297f12 100644
--- a/js/id/modes/select.js
+++ b/js/id/modes/select.js
@@ -97,14 +97,14 @@ iD.modes.Select = function(context, selection, initial) {
             if (d3.event) {
                 // Pan the map if the clicked feature intersects with the position
                 // of the inspector
-                var inspector_size = context.container().select('.inspector-wrap').size(),
-                    map_size = context.map().size(),
+                var inspectorSize = context.container().select('.inspector-wrap').size(),
+                    mapSize = context.map().size(),
                     offset = 50,
-                    shift_left = d3.event.clientX - map_size[0] + inspector_size[0] + offset,
-                    center = (map_size[0] / 2) + shift_left + offset;
+                    shiftLeft = d3.event.clientX - mapSize[0] + inspectorSize[0] + offset,
+                    center = (mapSize[0] / 2) + shiftLeft + offset;
 
-                if (shift_left > 0 && inspector_size[1] > d3.event.clientY) {
-                    context.map().centerEase(context.projection.invert([center, map_size[1]/2]));
+                if (shiftLeft > 0 && inspectorSize[1] > d3.event.clientY) {
+                    context.map().centerEase(context.projection.invert([center, mapSize[1]/2]));
                 }
             }