diff --git a/src/main/java/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTest.java b/src/main/java/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTest.java
index 3cc88ba..b547839 100644
--- a/src/main/java/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTest.java
+++ b/src/main/java/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTest.java
@@ -156,10 +156,12 @@ public class StreetAddressTest extends Test {
                 } else {
                     en = primitive.getBBox().getCenter().getEastNorth(ProjectionRegistry.getProjection());
                 }
-                long x = (long) Math.floor(en.getX() * gridDetail);
-                long y = (long) Math.floor(en.getY() * gridDetail);
-                final var point = new Point2D.Double(x, y);
-                primitiveCellMap.computeIfAbsent(point, p -> new ArrayList<>()).add(primitive);
+                if (en != null) {
+                    long x = (long) Math.floor(en.getX() * gridDetail);
+                    long y = (long) Math.floor(en.getY() * gridDetail);
+                    final var point = new Point2D.Double(x, y);
+                    primitiveCellMap.computeIfAbsent(point, p -> new ArrayList<>()).add(primitive);
+                }
             }
         }
     }
diff --git a/src/test/unit/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTestTest.java b/src/test/unit/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTestTest.java
index bdd7d96..a2933a1 100644
--- a/src/test/unit/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTestTest.java
+++ b/src/test/unit/org/openstreetmap/josm/plugins/mapwithai/data/validation/tests/StreetAddressTestTest.java
@@ -17,8 +17,11 @@ import org.openstreetmap.josm.data.osm.AbstractPrimitive;
 import org.openstreetmap.josm.data.osm.BBox;
 import org.openstreetmap.josm.data.osm.DataSet;
 import org.openstreetmap.josm.data.osm.Node;
+import org.openstreetmap.josm.data.osm.Relation;
+import org.openstreetmap.josm.data.osm.RelationMember;
 import org.openstreetmap.josm.data.osm.Way;
 import org.openstreetmap.josm.data.validation.OsmValidator;
+import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
 import org.openstreetmap.josm.testutils.annotations.BasicPreferences;
 import org.openstreetmap.josm.testutils.annotations.Projection;
 import org.openstreetmap.josm.tools.Pair;
@@ -138,4 +141,18 @@ class StreetAddressTestTest {
         assertDoesNotThrow(() -> test.visit(node));
         assertTrue(test.getErrors().isEmpty());
     }
+
+    @Test
+    void testNonRegression23186() {
+        final StreetAddressTest test = new StreetAddressTest();
+        final Relation relation = TestUtils.newRelation(
+                "addr:city=Alpine " + "addr:housenumber=501 " + "addr:postcode=83128 " + "addr:state=WY "
+                        + "addr:street=Palisades Reservoir County Road 101 " + "landuse=quarry "
+                        + "name=Alota Sand & Gravel Inc " + "phone=+1-307-654-7558 " + "resource=gravel "
+                        + "type=multipolygon",
+                new RelationMember("outer", new Way(968962006L)), new RelationMember("outer", new Way(968961999L)));
+        test.startTest(NullProgressMonitor.INSTANCE);
+        assertDoesNotThrow(() -> test.visit(relation));
+        test.endTest();
+    }
 }