diff --git a/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator.go b/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator.go
index 5119dd451..938c9bec9 100644
--- a/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator.go
+++ b/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator.go
@@ -178,6 +178,11 @@ func (h *RequestedCapacityHandler) HandleCreate(ctx *pkgctx.WebhookRequestContex
 		return CapacityResponse{Response: webhook.Errored(http.StatusBadRequest, fmt.Errorf("unsupported image kind %s", vm.Spec.Image.Kind))}
 	}
 
+	// Skip ISO images as they don't have boot disks.
+	if imageStatus.Type == "ISO" {
+		return CapacityResponse{Response: webhook.Allowed("")}
+	}
+
 	if len(imageStatus.Disks) < 1 || imageStatus.Disks[0].Capacity == nil {
 		return CapacityResponse{Response: webhook.Errored(http.StatusNotFound, errors.New("boot disk not found in image status"))}
 	}
diff --git a/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator_unit_test.go b/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator_unit_test.go
index 391fcad89..367473b10 100644
--- a/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator_unit_test.go
+++ b/webhooks/unifiedstoragequota/validation/unifiedstoragequota_validator_unit_test.go
@@ -682,6 +682,17 @@ func testRequestedCapacityHandlerHandleCreate() {
 					})
 				})
 
+				When("image type is ISO", func() {
+					BeforeEach(func() {
+						vmi.Status.Type = "ISO"
+					})
+
+					It("should write StatusOK code and an empty RequestedCapacity to the response", func() {
+						Expect(resp.Allowed).To(BeTrue())
+						Expect(int(resp.Result.Code)).To(Equal(http.StatusOK))
+					})
+				})
+
 				When("disks section is empty in image status", func() {
 					It("should write StatusNotFound code and an empty RequestedCapacity to the response", func() {
 						Expect(resp.Allowed).To(BeFalse())