diff --git a/src/test/java/gov/usgs/earthquake/nshmp/data/XySequenceTests.java b/src/test/java/gov/usgs/earthquake/nshmp/data/XySequenceTests.java
index 77f7a2c7d1ec874b72cf6909701d8e5da3a38e35..1c3fc403e677d2abb631500e15dad28ad83095c5 100644
--- a/src/test/java/gov/usgs/earthquake/nshmp/data/XySequenceTests.java
+++ b/src/test/java/gov/usgs/earthquake/nshmp/data/XySequenceTests.java
@@ -98,6 +98,14 @@ class XySequenceTests {
     });
   }
 
+  @Test
+  final void pointIndexTest() {
+    int index = 0;
+    for (XyPoint p : xy) {
+      assertEquals(index++, p.index());
+    }
+  }
+
   @Test
   final void xyTest() {
     for (int index = 0; index < xy.size(); index++) {