diff --git a/frontend/src/pages/Properties/PropertyDetail.js b/frontend/src/pages/Properties/PropertyDetail.js
index c5c0f2b..991b3ec 100644
--- a/frontend/src/pages/Properties/PropertyDetail.js
+++ b/frontend/src/pages/Properties/PropertyDetail.js
@@ -1289,7 +1289,7 @@ const PropertyDetail = () => {
                       const metersPerDegLat = 111320;
                       const dLat = (1 * 0.3048) / metersPerDegLat; // 1 ft north
                       const coords = prev.coordinates.map(([la, ln]) => [la + dLat, ln]);
-                      return { ...prev, coordinates };
+                      return { ...prev, coordinates: coords };
                     });
                   }}>▲</button>
                   <div></div>
@@ -1300,7 +1300,7 @@ const PropertyDetail = () => {
                       const metersPerDegLng = 111320 * Math.cos(lat * Math.PI / 180);
                       const dLng = (1 * 0.3048) / metersPerDegLng; // 1 ft west
                       const coords = prev.coordinates.map(([la, ln]) => [la, ln - dLng]);
-                      return { ...prev, coordinates };
+                      return { ...prev, coordinates: coords };
                     });
                   }}>◀</button>
                   <div></div>
@@ -1311,7 +1311,7 @@ const PropertyDetail = () => {
                       const metersPerDegLng = 111320 * Math.cos(lat * Math.PI / 180);
                       const dLng = (1 * 0.3048) / metersPerDegLng; // 1 ft east
                       const coords = prev.coordinates.map(([la, ln]) => [la, ln + dLng]);
-                      return { ...prev, coordinates };
+                      return { ...prev, coordinates: coords };
                     });
                   }}>▶</button>
                   <div></div>
@@ -1320,7 +1320,7 @@ const PropertyDetail = () => {
                       if (!prev) return prev;
                       const dLat = (1 * 0.3048) / 111320; // 1 ft south
                       const coords = prev.coordinates.map(([la, ln]) => [la - dLat, ln]);
-                      return { ...prev, coordinates };
+                      return { ...prev, coordinates: coords };
                     });
                   }}>▼</button>
                   <div></div>