diff --git a/pkg/cluster/cluster.go b/pkg/cluster/cluster.go
index bd1b66fc8..cd3a34e16 100644
--- a/pkg/cluster/cluster.go
+++ b/pkg/cluster/cluster.go
@@ -360,7 +360,7 @@ func (c *Cluster) compareStatefulSetWith(statefulSet *appsv1.StatefulSet) *compa
 	}
 	if !reflect.DeepEqual(c.Statefulset.Annotations, statefulSet.Annotations) {
 		match = false
-		reasons = append(reasons, "new statefulset's annotations does not match the current one")
+		reasons = append(reasons, "new statefulset's annotations do not match the current one")
 	}
 
 	needsRollUpdate, reasons = c.compareContainers("initContainers", c.Statefulset.Spec.Template.Spec.InitContainers, statefulSet.Spec.Template.Spec.InitContainers, needsRollUpdate, reasons)
diff --git a/pkg/cluster/majorversionupgrade.go b/pkg/cluster/majorversionupgrade.go
index d6b616904..51630c019 100644
--- a/pkg/cluster/majorversionupgrade.go
+++ b/pkg/cluster/majorversionupgrade.go
@@ -74,7 +74,7 @@ func (c *Cluster) majorVersionUpgrade() error {
 		if c.currentMajorVersion < desiredVersion {
 			podName := &spec.NamespacedName{Namespace: masterPod.Namespace, Name: masterPod.Name}
 			c.logger.Infof("triggering major version upgrade on pod %s", masterPod.Name)
-			command := fmt.Sprintf("su postgres -c \"python3 /scripts/inplace_upgrade.py %d 2>&1 | tee last_upgrade.log\"", numberOfPods)
+			command := fmt.Sprintf("su postgres -c \"/usr/bin/python3 /scripts/inplace_upgrade.py %d 2>&1 | tee last_upgrade.log\"", numberOfPods)
 			c.logger.Infof("executing: %s", command)
 			_, err := c.ExecCommand(podName, command)
 			if err != nil {