diff --git a/geo/src/main/java/org/odk/collect/geo/selection/SelectionMapFragment.kt b/geo/src/main/java/org/odk/collect/geo/selection/SelectionMapFragment.kt
index 8abf1f2413a..e3a64c1a133 100644
--- a/geo/src/main/java/org/odk/collect/geo/selection/SelectionMapFragment.kt
+++ b/geo/src/main/java/org/odk/collect/geo/selection/SelectionMapFragment.kt
@@ -388,7 +388,7 @@ class SelectionMapFragment(
 
         val pointIds = map.addMarkers(markerDescriptions)
         val lineIds = lines.fold(listOf<Int>()) { ids, item ->
-            ids + map.addPolyLine(LineDescription(item.points, item.strokeWidth, item.strokeColor, false, false))
+            ids + map.addPolyLine(LineDescription(item.points, item.strokeWidth, item.strokeColor))
         }
         val polygonIds = polygons.fold(listOf<Int>()) { ids, item ->
             ids + map.addPolygon(PolygonDescription(item.points, item.strokeWidth, item.strokeColor, item.fillColor))
diff --git a/maps/src/main/java/org/odk/collect/maps/LineDescription.kt b/maps/src/main/java/org/odk/collect/maps/LineDescription.kt
index ce4351c645f..e863d3d7f51 100644
--- a/maps/src/main/java/org/odk/collect/maps/LineDescription.kt
+++ b/maps/src/main/java/org/odk/collect/maps/LineDescription.kt
@@ -3,11 +3,11 @@ package org.odk.collect.maps
 import org.odk.collect.androidshared.utils.toColorInt
 
 data class LineDescription(
-    val points: List<MapPoint>,
-    private val strokeWidth: String?,
-    private val strokeColor: String?,
-    val draggable: Boolean,
-    val closed: Boolean
+    val points: List<MapPoint> = emptyList(),
+    private val strokeWidth: String? = null,
+    private val strokeColor: String? = null,
+    val draggable: Boolean = false,
+    val closed: Boolean = false
 ) {
     @JvmOverloads
     fun getStrokeWidth(forMapbox: Boolean = false): Float {
diff --git a/maps/src/main/java/org/odk/collect/maps/PolygonDescription.kt b/maps/src/main/java/org/odk/collect/maps/PolygonDescription.kt
index f27e64b8184..f97442bb661 100644
--- a/maps/src/main/java/org/odk/collect/maps/PolygonDescription.kt
+++ b/maps/src/main/java/org/odk/collect/maps/PolygonDescription.kt
@@ -4,10 +4,10 @@ import androidx.core.graphics.ColorUtils
 import org.odk.collect.androidshared.utils.toColorInt
 
 data class PolygonDescription(
-    val points: List<MapPoint>,
-    private val strokeWidth: String?,
-    private val strokeColor: String?,
-    private val fillColor: String?
+    val points: List<MapPoint> = emptyList(),
+    private val strokeWidth: String? = null,
+    private val strokeColor: String? = null,
+    private val fillColor: String? = null
 ) {
     fun getStrokeWidth(): Float {
         return try {
diff --git a/maps/src/test/java/org/odk/collect/maps/LineDescriptionTest.kt b/maps/src/test/java/org/odk/collect/maps/LineDescriptionTest.kt
index d0050981570..cf8c5c39f0d 100644
--- a/maps/src/test/java/org/odk/collect/maps/LineDescriptionTest.kt
+++ b/maps/src/test/java/org/odk/collect/maps/LineDescriptionTest.kt
@@ -10,49 +10,49 @@ import org.junit.runner.RunWith
 class LineDescriptionTest {
     @Test
     fun `getStrokeWidth returns the default value when the passed one is null`() {
-        val lineDescription = LineDescription(emptyList(), null, null, false, false)
+        val lineDescription = LineDescription()
         assertThat(lineDescription.getStrokeWidth(), equalTo(MapConsts.DEFAULT_STROKE_WIDTH))
     }
 
     @Test
     fun `getStrokeWidth returns the default value when the passed one is invalid`() {
-        val lineDescription = LineDescription(emptyList(), "blah", null, false, false)
+        val lineDescription = LineDescription(strokeWidth =  "blah")
         assertThat(lineDescription.getStrokeWidth(), equalTo(MapConsts.DEFAULT_STROKE_WIDTH))
     }
 
     @Test
     fun `getStrokeWidth returns the default value when the passed one is not greater than or equal to zero`() {
-        val lineDescription = LineDescription(emptyList(), "-1", null, false, false)
+        val lineDescription = LineDescription(strokeWidth = "-1")
         assertThat(lineDescription.getStrokeWidth(), equalTo(MapConsts.DEFAULT_STROKE_WIDTH))
     }
 
     @Test
     fun `getStrokeWidth returns custom value when the passed one is a valid int number`() {
-        val lineDescription = LineDescription(emptyList(), "10", null, false, false)
+        val lineDescription = LineDescription(strokeWidth =  "10")
         assertThat(lineDescription.getStrokeWidth(), equalTo(10f))
     }
 
     @Test
     fun `getStrokeWidth returns custom value when the passed one is a valid float number`() {
-        val lineDescription = LineDescription(emptyList(), "10.5", null, false, false)
+        val lineDescription = LineDescription(strokeWidth = "10.5")
         assertThat(lineDescription.getStrokeWidth(), equalTo(10.5f))
     }
 
     @Test
     fun `getStrokeColor returns the default color when the passed one is null`() {
-        val lineDescription = LineDescription(emptyList(), null, null, false, false)
+        val lineDescription = LineDescription()
         assertThat(lineDescription.getStrokeColor(), equalTo(MapConsts.DEFAULT_STROKE_COLOR))
     }
 
     @Test
     fun `getStrokeColor returns the default color when the passed one is invalid`() {
-        val lineDescription = LineDescription(emptyList(), null, "blah", false, false)
+        val lineDescription = LineDescription(strokeColor = "blah")
         assertThat(lineDescription.getStrokeColor(), equalTo(MapConsts.DEFAULT_STROKE_COLOR))
     }
 
     @Test
     fun `getStrokeColor returns custom color when it is valid`() {
-        val lineDescription = LineDescription(emptyList(), null, "#aaccee", false, false)
+        val lineDescription = LineDescription(strokeColor = "#aaccee")
         assertThat(lineDescription.getStrokeColor(), equalTo(-5583634))
     }
 }
diff --git a/maps/src/test/java/org/odk/collect/maps/PolygonDescriptionTest.kt b/maps/src/test/java/org/odk/collect/maps/PolygonDescriptionTest.kt
index a8a0fe0b27c..d697012b98b 100644
--- a/maps/src/test/java/org/odk/collect/maps/PolygonDescriptionTest.kt
+++ b/maps/src/test/java/org/odk/collect/maps/PolygonDescriptionTest.kt
@@ -10,67 +10,67 @@ import org.junit.runner.RunWith
 class PolygonDescriptionTest {
     @Test
     fun `getStrokeWidth returns the default value when the passed one is null`() {
-        val polygonDescription = PolygonDescription(emptyList(), null, null, null)
+        val polygonDescription = PolygonDescription()
         assertThat(polygonDescription.getStrokeWidth(), equalTo(MapConsts.DEFAULT_STROKE_WIDTH))
     }
 
     @Test
     fun `getStrokeWidth returns the default value when the passed one is invalid`() {
-        val polygonDescription = PolygonDescription(emptyList(), "blah", null, null)
+        val polygonDescription = PolygonDescription(strokeWidth = "blah")
         assertThat(polygonDescription.getStrokeWidth(), equalTo(MapConsts.DEFAULT_STROKE_WIDTH))
     }
 
     @Test
     fun `getStrokeWidth returns the default value when the passed one is not greater than or equal to zero`() {
-        val polygonDescription = PolygonDescription(emptyList(), "-1", null, null)
+        val polygonDescription = PolygonDescription(strokeWidth = "-1")
         assertThat(polygonDescription.getStrokeWidth(), equalTo(MapConsts.DEFAULT_STROKE_WIDTH))
     }
 
     @Test
     fun `getStrokeWidth returns custom value when the passed one is a valid int number`() {
-        val polygonDescription = PolygonDescription(emptyList(), "10", null, null)
+        val polygonDescription = PolygonDescription(strokeWidth = "10")
         assertThat(polygonDescription.getStrokeWidth(), equalTo(10f))
     }
 
     @Test
     fun `getStrokeWidth returns custom value when the passed one is a valid float number`() {
-        val polygonDescription = PolygonDescription(emptyList(), "10.5", null, null)
+        val polygonDescription = PolygonDescription(strokeWidth = "10.5")
         assertThat(polygonDescription.getStrokeWidth(), equalTo(10.5f))
     }
 
     @Test
     fun `getStrokeColor returns the default color when the passed one is null`() {
-        val polygonDescription = PolygonDescription(emptyList(), "0", null, null)
+        val polygonDescription = PolygonDescription()
         assertThat(polygonDescription.getStrokeColor(), equalTo(MapConsts.DEFAULT_STROKE_COLOR))
     }
 
     @Test
     fun `getStrokeColor returns the default color when the passed one is invalid`() {
-        val polygonDescription = PolygonDescription(emptyList(), "0", "blah", null)
+        val polygonDescription = PolygonDescription(strokeColor = "blah")
         assertThat(polygonDescription.getStrokeColor(), equalTo(MapConsts.DEFAULT_STROKE_COLOR))
     }
 
     @Test
     fun `getStrokeColor returns custom color when it is valid`() {
-        val polygonDescription = PolygonDescription(emptyList(), "0", "#aaccee", null)
+        val polygonDescription = PolygonDescription(strokeColor = "#aaccee")
         assertThat(polygonDescription.getStrokeColor(), equalTo(-5583634))
     }
 
     @Test
     fun `getFillColor returns the default color when the passed one is null`() {
-        val polygonDescription = PolygonDescription(emptyList(), "0", null, null)
+        val polygonDescription = PolygonDescription()
         assertThat(polygonDescription.getFillColor(), equalTo(1157562368))
     }
 
     @Test
     fun `getFillColor returns the default color when the passed one is invalid`() {
-        val polygonDescription = PolygonDescription(emptyList(), "0", null, "blah")
+        val polygonDescription = PolygonDescription(fillColor = "blah")
         assertThat(polygonDescription.getFillColor(), equalTo(1157562368))
     }
 
     @Test
     fun `getFillColor returns custom color when it is valid`() {
-        val polygonDescription = PolygonDescription(emptyList(), "0", null, "#aaccee")
+        val polygonDescription = PolygonDescription(fillColor = "#aaccee")
         assertThat(polygonDescription.getFillColor(), equalTo(1152044270))
     }
 }