diff --git a/apis/advertisement/v1alpha1/discovery_types.go b/apis/advertisement/v1alpha1/discovery_types.go
index b9282e8..b299055 100644
--- a/apis/advertisement/v1alpha1/discovery_types.go
+++ b/apis/advertisement/v1alpha1/discovery_types.go
@@ -32,7 +32,7 @@ type DiscoverySpec struct {
 
 	// This is the FlavourSelector that describes the characteristics of the intent that the solver is looking to satisfy
 	// This pattern corresponds to what has been defined in the REAR Protocol to do a discovery with a selector
-	Selector *nodecorev1alpha1.Selector `json:"selector"`
+	Selector *nodecorev1alpha1.Selector `json:"selector,omitempty"`
 
 	// This flag indicates that needs to be established a subscription to the provider in case a match is found.
 	// In order to have periodic updates of the status of the matching Flavor
diff --git a/deployments/node/crds/advertisement.fluidos.eu_discoveries.yaml b/deployments/node/crds/advertisement.fluidos.eu_discoveries.yaml
index 5c0bfba..4c40ef5 100644
--- a/deployments/node/crds/advertisement.fluidos.eu_discoveries.yaml
+++ b/deployments/node/crds/advertisement.fluidos.eu_discoveries.yaml
@@ -88,7 +88,6 @@ spec:
                   In order to have periodic updates of the status of the matching Flavor
                 type: boolean
             required:
-            - selector
             - solverID
             - subscribe
             type: object
diff --git a/pkg/rear-controller/gateway/gateway.go b/pkg/rear-controller/gateway/gateway.go
index 9c1d3f2..2789f9e 100644
--- a/pkg/rear-controller/gateway/gateway.go
+++ b/pkg/rear-controller/gateway/gateway.go
@@ -152,7 +152,7 @@ func (g *Gateway) CacheRefresher(interval time.Duration) func(ctx context.Contex
 //
 //nolint:revive // we need to pass ctx as parameter to be compliant with the Poller interface
 func (g *Gateway) refreshCache(ctx context.Context) (bool, error) {
-	klog.Infof("Refreshing cache")
+	klog.InfoDepth(1, "Refreshing cache...")
 	for transactionID, transaction := range g.Transactions {
 		if tools.CheckExpiration(transaction.ExpirationTime) {
 			klog.Infof("Transaction %s expired, removing it from cache...", transactionID)
diff --git a/pkg/rear-controller/gateway/provider.go b/pkg/rear-controller/gateway/provider.go
index 9306372..78b5bc4 100644
--- a/pkg/rear-controller/gateway/provider.go
+++ b/pkg/rear-controller/gateway/provider.go
@@ -54,7 +54,7 @@ func (g *Gateway) getFlavors(w http.ResponseWriter, _ *http.Request) {
 
 	// Filtering only the available flavors
 	for i := range flavors {
-		if !flavors[i].Spec.Availability {
+		if flavors[i].Spec.Availability {
 			availableFlavors = append(availableFlavors, flavors[i])
 		}
 	}
diff --git a/pkg/rear-controller/gateway/services.go b/pkg/rear-controller/gateway/services.go
index 238b9fe..c4c9213 100644
--- a/pkg/rear-controller/gateway/services.go
+++ b/pkg/rear-controller/gateway/services.go
@@ -96,7 +96,7 @@ func searchFlavorWithSelector(ctx context.Context, selector models.Selector, add
 func searchFlavor(ctx context.Context, addr string) ([]*nodecorev1alpha1.Flavor, error) {
 	var flavors []models.Flavor
 
-	url := fmt.Sprintf("http://%s%s", addr, ListFlavorsPath)
+	url := fmt.Sprintf("http://%s%s", addr, Routes.Flavors)
 
 	resp, err := makeRequest(ctx, "GET", url, nil)
 	if err != nil {