diff --git a/render/container.go b/render/container.go
index 998ce53e0..11ee980a8 100644
--- a/render/container.go
+++ b/render/container.go
@@ -131,7 +131,7 @@ func (r containerWithImageNameRenderer) Render(rpt report.Report) Nodes {
 	containers := r.Renderer.Render(rpt)
 	images := SelectContainerImage.Render(rpt)
 
-	outputs := report.Nodes{}
+	outputs := make(report.Nodes, len(containers.Nodes))
 	for id, c := range containers.Nodes {
 		outputs[id] = c
 		imageID, ok := c.Latest.Lookup(docker.ImageID)
diff --git a/render/process.go b/render/process.go
index 3d84792fa..0d2989059 100644
--- a/render/process.go
+++ b/render/process.go
@@ -42,7 +42,7 @@ func (r processWithContainerNameRenderer) Render(rpt report.Report) Nodes {
 	processes := r.Renderer.Render(rpt)
 	containers := SelectContainer.Render(rpt)
 
-	outputs := report.Nodes{}
+	outputs := make(report.Nodes, len(processes.Nodes))
 	for id, p := range processes.Nodes {
 		outputs[id] = p
 		containerID, timestamp, ok := p.Latest.LookupEntry(docker.ContainerID)