diff --git a/api/core/v1alpha1/catalog_types.go b/api/core/v1alpha1/catalog_types.go
index 2278ccdc..f99a547e 100644
--- a/api/core/v1alpha1/catalog_types.go
+++ b/api/core/v1alpha1/catalog_types.go
@@ -70,7 +70,7 @@ type CatalogList struct {
 }
 
 // CatalogSpec defines the desired state of Catalog
-// +kubebuilder:validation:XValidation:rule="!has(self.source.image.pollInterval) || (self.source.image.pollInterval == \"\") || (self.source.image.ref.find('@sha256:') == \"\")",message="cannot specify PollInterval while using digest-based image"
+// +kubebuilder:validation:XValidation:rule="!has(self.source.image.pollInterval) || (self.source.image.ref.find('@sha256:') == \"\")",message="cannot specify PollInterval while using digest-based image"
 type CatalogSpec struct {
 	// Source is the source of a Catalog that contains Operators' metadata in the FBC format
 	// https://olm.operatorframework.io/docs/reference/file-based-catalogs/#docs
@@ -134,6 +134,7 @@ type ImageSource struct {
 	// PollInterval indicates the interval at which the image source should be polled for new content,
 	// specified as a duration (e.g., "5m", "1h", "24h", "etc".). Note that PollInterval may not be
 	// specified for a catalog image referenced by a sha256 digest.
+	// +kubebuilder:validation:Format:=duration
 	PollInterval *metav1.Duration `json:"pollInterval,omitempty"`
 	// InsecureSkipTLSVerify indicates that TLS certificate validation should be skipped.
 	// If this option is specified, the HTTPS protocol will still be used to
diff --git a/config/crd/bases/catalogd.operatorframework.io_catalogs.yaml b/config/crd/bases/catalogd.operatorframework.io_catalogs.yaml
index 624331d2..9bb5fd2c 100644
--- a/config/crd/bases/catalogd.operatorframework.io_catalogs.yaml
+++ b/config/crd/bases/catalogd.operatorframework.io_catalogs.yaml
@@ -62,6 +62,7 @@ spec:
                           as a duration (e.g., "5m", "1h", "24h", "etc".). Note that
                           PollInterval may not be specified for a catalog image referenced
                           by a sha256 digest.
+                        format: duration
                         type: string
                       pullSecret:
                         description: PullSecret contains the name of the image pull
@@ -87,8 +88,8 @@ spec:
             type: object
             x-kubernetes-validations:
             - message: cannot specify PollInterval while using digest-based image
-              rule: '!has(self.source.image.pollInterval) || (self.source.image.pollInterval
-                == "") || (self.source.image.ref.find(''@sha256:'') == "")'
+              rule: '!has(self.source.image.pollInterval) || (self.source.image.ref.find(''@sha256:'')
+                == "")'
           status:
             description: CatalogStatus defines the observed state of Catalog
             properties: