diff --git a/types/actions-on-google/assistant-app.d.ts b/types/actions-on-google/assistant-app.d.ts
index 58d933baf2..d835915259 100644
--- a/types/actions-on-google/assistant-app.d.ts
+++ b/types/actions-on-google/assistant-app.d.ts
@@ -263,8 +263,8 @@ export interface UserName {
  * User's permissioned device location.
  */
 export interface DeviceLocation {
-    /** {latitude, longitude}. Requested with SupportedPermissions.DEVICE_PRECISE_LOCATION. */
-    coordinates: object;
+    /** Coordinates: {latitude, longitude}. Requested with SupportedPermissions.DEVICE_PRECISE_LOCATION. */
+    coordinates: Coordinates;
     /** Full, formatted street address. Requested with SupportedPermissions.DEVICE_PRECISE_LOCATION. */
     address: string;
     /** Zip code. Requested with SupportedPermissions.DEVICE_COARSE_LOCATION. */
@@ -273,6 +273,16 @@ export interface DeviceLocation {
     city: string;
 }
 
+/**
+ * Coordinates containing latitude and longitude
+ */
+export interface Coordinates {
+    /** Latitude coordinate. */
+    latitude: number;
+    /** Longitude coordinate. */
+    longitude: number;
+}
+
 /**
  * User object.
  */