diff --git a/data/core.yaml b/data/core.yaml
index 350627d51..2ea6dbfa2 100644
--- a/data/core.yaml
+++ b/data/core.yaml
@@ -900,7 +900,7 @@ en:
       title: "Navigation"
       drag: "The main map area shows OpenStreetMap data on top of a background. You can navigate by dragging and scrolling, just like any web map. **Drag the map!**"
       zoom: "You can zoom in or out by scrolling with the mouse wheel or trackpad. **Zoom the map!**"
-      select: "Map features are represented three ways: using points, lines or areas. All features can be selected by clicking on them. **Click on the point to select it.**"
+      select: "Map features are represented three ways: using points, lines, or areas. All features can be selected by clicking on them. **Click on the point to select it.**"
       selected: "Great! The point is now selected. Selected items are drawn with a pulsing glow."
       pane: "When a feature is selected, the feature editor is displayed. The header shows us the feature type and the main pane shows the feature's attributes, such as its name and address. **Close the feature editor by hitting escape or pressing the {button} button in the upper corner.**"
       search: "You can also search for features in the current view, or worldwide. **Search for '{name}'**"
diff --git a/dist/locales/en.json b/dist/locales/en.json
index b6381ccba..f0806077b 100644
--- a/dist/locales/en.json
+++ b/dist/locales/en.json
@@ -760,7 +760,7 @@
                 "title": "Navigation",
                 "drag": "The main map area shows OpenStreetMap data on top of a background. You can navigate by dragging and scrolling, just like any web map. **Drag the map!**",
                 "zoom": "You can zoom in or out by scrolling with the mouse wheel or trackpad. **Zoom the map!**",
-                "select": "Map features are represented three ways: using points, lines or areas. All features can be selected by clicking on them. **Click on the point to select it.**",
+                "select": "Map features are represented three ways: using points, lines, or areas. All features can be selected by clicking on them. **Click on the point to select it.**",
                 "selected": "Great! The point is now selected. Selected items are drawn with a pulsing glow.",
                 "pane": "When a feature is selected, the feature editor is displayed. The header shows us the feature type and the main pane shows the feature's attributes, such as its name and address. **Close the feature editor by hitting escape or pressing the {button} button in the upper corner.**",
                 "search": "You can also search for features in the current view, or worldwide. **Search for '{name}'**",