diff --git a/internal/fullnode/build_pods.go b/internal/fullnode/build_pods.go
index 5c9bf630..c46571bb 100644
--- a/internal/fullnode/build_pods.go
+++ b/internal/fullnode/build_pods.go
@@ -30,7 +30,7 @@ func BuildPods(crd *cosmosv1.CosmosFullNode, cksums ConfigChecksums) ([]diff.Res
 				continue
 			}
 			if o.Image != "" {
-				pod.Spec.Containers[0].Image = o.Image
+				setMainContainerImage(pod, o.Image)
 			}
 		}
 		pod.Annotations[configChecksumAnnotation] = cksums[client.ObjectKeyFromObject(pod)]
@@ -39,6 +39,15 @@ func BuildPods(crd *cosmosv1.CosmosFullNode, cksums ConfigChecksums) ([]diff.Res
 	return pods, nil
 }
 
+func setMainContainerImage(pod *corev1.Pod, image string) {
+	for i := range pod.Spec.Containers {
+		if pod.Spec.Containers[i].Name == mainContainer {
+			pod.Spec.Containers[i].Image = image
+			return
+		}
+	}
+}
+
 func podCandidates(crd *cosmosv1.CosmosFullNode) map[string]struct{} {
 	candidates := make(map[string]struct{})
 	for _, v := range crd.Status.ScheduledSnapshotStatus {
diff --git a/internal/fullnode/pod_builder.go b/internal/fullnode/pod_builder.go
index 8f44b07f..67c77922 100644
--- a/internal/fullnode/pod_builder.go
+++ b/internal/fullnode/pod_builder.go
@@ -21,7 +21,10 @@ import (
 
 var bufPool = sync.Pool{New: func() any { return new(bytes.Buffer) }}
 
-const healthCheckPort = healthcheck.Port
+const (
+	healthCheckPort = healthcheck.Port
+	mainContainer   = "node"
+)
 
 // PodBuilder builds corev1.Pods
 type PodBuilder struct {
@@ -65,7 +68,7 @@ func NewPodBuilder(crd *cosmosv1.CosmosFullNode) PodBuilder {
 			Containers: []corev1.Container{
 				// Main start container.
 				{
-					Name:  "node",
+					Name:  mainContainer,
 					Image: tpl.Image,
 					// The following is a useful hack if you need to inspect the PV.
 					//Command: []string{"/bin/sh"},