diff --git a/src/main/java/gov/usgs/earthquake/nshmp/data/ArrayXySequence.java b/src/main/java/gov/usgs/earthquake/nshmp/data/ArrayXySequence.java
index 6e531a07bdd5d3048a92533379f96f59db88ac0f..82f2301e4b6bedc79a792c30364e702b1c87b1d6 100644
--- a/src/main/java/gov/usgs/earthquake/nshmp/data/ArrayXySequence.java
+++ b/src/main/java/gov/usgs/earthquake/nshmp/data/ArrayXySequence.java
@@ -3,14 +3,13 @@ package gov.usgs.earthquake.nshmp.data;
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkElementIndex;
 import static gov.usgs.earthquake.nshmp.Text.NEWLINE;
+import static java.util.stream.Collectors.joining;
 
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.Objects;
 import java.util.stream.DoubleStream;
 
-import com.google.common.base.Joiner;
-
 /**
  * An immutable, array-backed implementation of {@code XySequence}.
  *
@@ -127,7 +126,9 @@ class ArrayXySequence implements XySequence {
     return new StringBuilder(getClass().getSimpleName())
         .append(":")
         .append(NEWLINE)
-        .append(Joiner.on(NEWLINE).join(this))
+        .append(stream()
+            .map(XyPoint::toString)
+            .collect(joining(NEWLINE)))
         .toString();
   }
 
@@ -156,8 +157,9 @@ class ArrayXySequence implements XySequence {
 
     @Override
     public String toString() {
-      return "XyPoint: [" + x() + ", " + y() + "]";
+      return " [" + x() + ", " + y() + "]";
     }
+
   }
 
   @Override
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 379ea4e530515d4e171721bb8ff60e5cd57e69a5..77f7a2c7d1ec874b72cf6909701d8e5da3a38e35 100644
--- a/src/test/java/gov/usgs/earthquake/nshmp/data/XySequenceTests.java
+++ b/src/test/java/gov/usgs/earthquake/nshmp/data/XySequenceTests.java
@@ -212,10 +212,10 @@ class XySequenceTests {
   final void testToString() {
     String expected = new StringBuilder()
         .append("ArrayXySequence:").append(Text.NEWLINE)
-        .append("XyPoint: [0.0, -1.0]").append(Text.NEWLINE)
-        .append("XyPoint: [1.0, 10.5]").append(Text.NEWLINE)
-        .append("XyPoint: [2.0, 5.25]").append(Text.NEWLINE)
-        .append("XyPoint: [3.0, 2.5]").toString();
+        .append(" [0.0, -1.0]").append(Text.NEWLINE)
+        .append(" [1.0, 10.5]").append(Text.NEWLINE)
+        .append(" [2.0, 5.25]").append(Text.NEWLINE)
+        .append(" [3.0, 2.5]").toString();
     assertEquals(expected, xy.toString());
   }