diff --git a/command/plan.go b/command/plan.go
index a9fab5fde..7526eaf4a 100644
--- a/command/plan.go
+++ b/command/plan.go
@@ -353,15 +353,17 @@ func formatTaskDiff(task *api.TaskDiff, startPrefix, taskPrefix int, verbose boo
 // of spaces to put between the marker and object name output.
 func formatObjectDiff(diff *api.ObjectDiff, startPrefix, keyPrefix int) string {
 	start := strings.Repeat(" ", startPrefix)
-	marker, _ := getDiffString(diff.Type)
+	marker, markerLen := getDiffString(diff.Type)
 	out := fmt.Sprintf("%s%s%s%s {\n", start, marker, strings.Repeat(" ", keyPrefix), diff.Name)
 
 	// Determine the length of the longest name and longest diff marker to
 	// properly align names and values
 	longestField, longestMarker := getLongestPrefixes(diff.Fields, diff.Objects)
-	subStartPrefix := startPrefix + 2
+	subStartPrefix := startPrefix + keyPrefix + 2
 	out += alignedFieldAndObjects(diff.Fields, diff.Objects, subStartPrefix, longestField, longestMarker)
-	return fmt.Sprintf("%s\n%s}", out, start)
+
+	endprefix := strings.Repeat(" ", startPrefix+markerLen+keyPrefix)
+	return fmt.Sprintf("%s\n%s}", out, endprefix)
 }
 
 // formatFieldDiff produces an annotated diff of a field. startPrefix is the
diff --git a/nomad/structs/diff.go b/nomad/structs/diff.go
index 2e3751cfe..0c2d943c7 100644
--- a/nomad/structs/diff.go
+++ b/nomad/structs/diff.go
@@ -98,7 +98,7 @@ func (j *Job) Diff(other *Job, contextual bool) (*JobDiff, error) {
 	diff.Fields = fieldDiffs(oldPrimitiveFlat, newPrimitiveFlat, false)
 
 	// Datacenters diff
-	if setDiff := stringSetDiff(j.Datacenters, other.Datacenters, "Datacenters", contextual); setDiff != nil {
+	if setDiff := stringSetDiff(j.Datacenters, other.Datacenters, "Datacenters", false); setDiff != nil {
 		diff.Objects = append(diff.Objects, setDiff)
 	}
 
diff --git a/nomad/structs/diff_test.go b/nomad/structs/diff_test.go
index 3f3c35042..10c589e31 100644
--- a/nomad/structs/diff_test.go
+++ b/nomad/structs/diff_test.go
@@ -407,26 +407,6 @@ func TestJobDiff(t *testing.T) {
 			},
 			Expected: &JobDiff{
 				Type: DiffTypeNone,
-				Objects: []*ObjectDiff{
-					{
-						Type: DiffTypeNone,
-						Name: "Datacenters",
-						Fields: []*FieldDiff{
-							{
-								Type: DiffTypeNone,
-								Name: "Datacenters",
-								Old:  "bar",
-								New:  "bar",
-							},
-							{
-								Type: DiffTypeNone,
-								Name: "Datacenters",
-								Old:  "foo",
-								New:  "foo",
-							},
-						},
-					},
-				},
 			},
 		},
 		{