diff --git a/build/crd/percona/generated/pgv2.percona.com_perconapgclusters.yaml b/build/crd/percona/generated/pgv2.percona.com_perconapgclusters.yaml
index b31dda364..c6207c514 100644
--- a/build/crd/percona/generated/pgv2.percona.com_perconapgclusters.yaml
+++ b/build/crd/percona/generated/pgv2.percona.com_perconapgclusters.yaml
@@ -5870,7 +5870,6 @@ spec:
                           required:
                           - name
                           type: object
-                        minItems: 1
                         type: array
                         x-kubernetes-list-map-keys:
                         - name
@@ -7091,6 +7090,11 @@ spec:
                     description: Enable tracking latest restorable time
                     type: boolean
                 type: object
+                x-kubernetes-validations:
+                - message: At least one repository must be configured when backups
+                    are enabled
+                  rule: (has(self.enabled) && self.enabled == false) || size(self.pgbackrest.repos)
+                    > 0
               crVersion:
                 description: |-
                   Version of the operator. Update this to new version after operator
diff --git a/config/crd/bases/pgv2.percona.com_perconapgclusters.yaml b/config/crd/bases/pgv2.percona.com_perconapgclusters.yaml
index 8b38ce51f..1dc1ef246 100644
--- a/config/crd/bases/pgv2.percona.com_perconapgclusters.yaml
+++ b/config/crd/bases/pgv2.percona.com_perconapgclusters.yaml
@@ -6275,7 +6275,6 @@ spec:
                           required:
                           - name
                           type: object
-                        minItems: 1
                         type: array
                         x-kubernetes-list-map-keys:
                         - name
@@ -7496,6 +7495,11 @@ spec:
                     description: Enable tracking latest restorable time
                     type: boolean
                 type: object
+                x-kubernetes-validations:
+                - message: At least one repository must be configured when backups
+                    are enabled
+                  rule: (has(self.enabled) && self.enabled == false) || size(self.pgbackrest.repos)
+                    > 0
               crVersion:
                 description: |-
                   Version of the operator. Update this to new version after operator
diff --git a/deploy/bundle.yaml b/deploy/bundle.yaml
index 97b02f85f..2f326a7c7 100644
--- a/deploy/bundle.yaml
+++ b/deploy/bundle.yaml
@@ -6572,7 +6572,6 @@ spec:
                           required:
                           - name
                           type: object
-                        minItems: 1
                         type: array
                         x-kubernetes-list-map-keys:
                         - name
@@ -7793,6 +7792,11 @@ spec:
                     description: Enable tracking latest restorable time
                     type: boolean
                 type: object
+                x-kubernetes-validations:
+                - message: At least one repository must be configured when backups
+                    are enabled
+                  rule: (has(self.enabled) && self.enabled == false) || size(self.pgbackrest.repos)
+                    > 0
               crVersion:
                 description: |-
                   Version of the operator. Update this to new version after operator
diff --git a/deploy/crd.yaml b/deploy/crd.yaml
index 9124e3457..2e75d79bb 100644
--- a/deploy/crd.yaml
+++ b/deploy/crd.yaml
@@ -6572,7 +6572,6 @@ spec:
                           required:
                           - name
                           type: object
-                        minItems: 1
                         type: array
                         x-kubernetes-list-map-keys:
                         - name
@@ -7793,6 +7792,11 @@ spec:
                     description: Enable tracking latest restorable time
                     type: boolean
                 type: object
+                x-kubernetes-validations:
+                - message: At least one repository must be configured when backups
+                    are enabled
+                  rule: (has(self.enabled) && self.enabled == false) || size(self.pgbackrest.repos)
+                    > 0
               crVersion:
                 description: |-
                   Version of the operator. Update this to new version after operator
diff --git a/deploy/cw-bundle.yaml b/deploy/cw-bundle.yaml
index 8d766bd59..19bf06c04 100644
--- a/deploy/cw-bundle.yaml
+++ b/deploy/cw-bundle.yaml
@@ -6572,7 +6572,6 @@ spec:
                           required:
                           - name
                           type: object
-                        minItems: 1
                         type: array
                         x-kubernetes-list-map-keys:
                         - name
@@ -7793,6 +7792,11 @@ spec:
                     description: Enable tracking latest restorable time
                     type: boolean
                 type: object
+                x-kubernetes-validations:
+                - message: At least one repository must be configured when backups
+                    are enabled
+                  rule: (has(self.enabled) && self.enabled == false) || size(self.pgbackrest.repos)
+                    > 0
               crVersion:
                 description: |-
                   Version of the operator. Update this to new version after operator
diff --git a/percona/controller/pgcluster/controller_test.go b/percona/controller/pgcluster/controller_test.go
index 7c5d3926c..548ef3a0c 100644
--- a/percona/controller/pgcluster/controller_test.go
+++ b/percona/controller/pgcluster/controller_test.go
@@ -2353,6 +2353,86 @@ var _ = Describe("CR Validations", Ordered, func() {
 			})
 		})
 	})
+
+	Context("Backup repository validations", Ordered, func() {
+		When("creating a CR with valid backup configurations", func() {
+			It("should accept backups disabled with no repositories", func() {
+				cr, err := readDefaultCR("cr-validation-backup-1", ns)
+				Expect(err).NotTo(HaveOccurred())
+
+				cr.Spec.Backups.Enabled = &f
+				cr.Spec.Backups.PGBackRest.Repos = []v1beta1.PGBackRestRepo{}
+
+				Expect(k8sClient.Create(ctx, cr)).Should(Succeed())
+			})
+
+			It("should accept backups enabled with at least one repository", func() {
+				cr, err := readDefaultCR("cr-validation-backup-2", ns)
+				Expect(err).NotTo(HaveOccurred())
+
+				cr.Spec.Backups.Enabled = &t
+				cr.Spec.Backups.PGBackRest.Repos = []v1beta1.PGBackRestRepo{
+					{Name: "repo1"},
+				}
+
+				Expect(k8sClient.Create(ctx, cr)).Should(Succeed())
+			})
+
+			It("should accept backups disabled with at least one repository", func() {
+				cr, err := readDefaultCR("cr-validation-backup-3", ns)
+				Expect(err).NotTo(HaveOccurred())
+
+				cr.Spec.Backups.Enabled = &f
+				cr.Spec.Backups.PGBackRest.Repos = []v1beta1.PGBackRestRepo{
+					{Name: "repo1"},
+				}
+
+				Expect(k8sClient.Create(ctx, cr)).Should(Succeed())
+			})
+
+			It("should accept backups enabled (nil - default true) with repositories", func() {
+				cr, err := readDefaultCR("cr-validation-backup-4", ns)
+				Expect(err).NotTo(HaveOccurred())
+
+				cr.Spec.Backups.Enabled = nil // defaults to enabled
+				cr.Spec.Backups.PGBackRest.Repos = []v1beta1.PGBackRestRepo{
+					{Name: "repo1"},
+				}
+
+				Expect(k8sClient.Create(ctx, cr)).Should(Succeed())
+			})
+		})
+
+		When("creating a CR with invalid backup configurations", func() {
+			It("should reject backups enabled with no repositories", func() {
+				cr, err := readDefaultCR("cr-validation-backup-5", ns)
+				Expect(err).NotTo(HaveOccurred())
+
+				cr.Spec.Backups.Enabled = &t
+				cr.Spec.Backups.PGBackRest.Repos = []v1beta1.PGBackRestRepo{}
+
+				err = k8sClient.Create(ctx, cr)
+				Expect(err).To(HaveOccurred())
+				Expect(err.Error()).To(ContainSubstring(
+					"At least one repository must be configured when backups are enabled",
+				))
+			})
+
+			It("should reject backups enabled (nil - default true) with no repositories", func() {
+				cr, err := readDefaultCR("cr-validation-backup-6", ns)
+				Expect(err).NotTo(HaveOccurred())
+
+				cr.Spec.Backups.Enabled = nil // defaults to enabled
+				cr.Spec.Backups.PGBackRest.Repos = []v1beta1.PGBackRestRepo{}
+
+				err = k8sClient.Create(ctx, cr)
+				Expect(err).To(HaveOccurred())
+				Expect(err.Error()).To(ContainSubstring(
+					"At least one repository must be configured when backups are enabled",
+				))
+			})
+		})
+	})
 })
 
 var _ = Describe("Init Container", Ordered, func() {
diff --git a/pkg/apis/pgv2.percona.com/v2/perconapgcluster_types.go b/pkg/apis/pgv2.percona.com/v2/perconapgcluster_types.go
index 8b0fb316e..ffa75d94e 100644
--- a/pkg/apis/pgv2.percona.com/v2/perconapgcluster_types.go
+++ b/pkg/apis/pgv2.percona.com/v2/perconapgcluster_types.go
@@ -476,6 +476,8 @@ type Patroni struct {
 	Version string `json:"version"`
 }
 
+// Backups struct.
+// +kubebuilder:validation:XValidation:rule="(has(self.enabled) && self.enabled == false) || size(self.pgbackrest.repos) > 0",message="At least one repository must be configured when backups are enabled"
 type Backups struct {
 	Enabled *bool `json:"enabled,omitempty"`
 
@@ -562,7 +564,6 @@ type PGBackRestArchive struct {
 	Jobs *crunchyv1beta1.BackupJobs `json:"jobs,omitempty"`
 
 	// Defines a pgBackRest repository
-	// +kubebuilder:validation:MinItems=1
 	// +listType=map
 	// +listMapKey=name
 	Repos []crunchyv1beta1.PGBackRestRepo `json:"repos"`