diff --git a/docs/gateway-api-compatibility.md b/docs/gateway-api-compatibility.md
index 9e64aa7a1..4b1b4ef2a 100644
--- a/docs/gateway-api-compatibility.md
+++ b/docs/gateway-api-compatibility.md
@@ -93,6 +93,7 @@ Fields:
       * `Programmed/False/Invalid`
       * `ResolvedRefs/True/ResolvedRefs`
       * `ResolvedRefs/False/InvalidCertificateRef`
+      * `ResolvedRefs/False/InvalidRouteKinds`
       * `Conflicted/True/ProtocolConflict`
       * `Conflicted/False/NoConflicts`
 
diff --git a/internal/state/conditions/conditions.go b/internal/state/conditions/conditions.go
index 1dc04c95d..b1e64ef23 100644
--- a/internal/state/conditions/conditions.go
+++ b/internal/state/conditions/conditions.go
@@ -348,6 +348,20 @@ func NewListenerInvalidCertificateRef(msg string) []Condition {
 	}
 }
 
+// NewListenerInvalidRouteKinds returns Conditions that indicate that an invalid or unsupported Route kind is
+// specified by the Listener.
+func NewListenerInvalidRouteKinds(msg string) []Condition {
+	return []Condition{
+		{
+			Type:    string(v1beta1.ListenerReasonResolvedRefs),
+			Status:  metav1.ConditionFalse,
+			Reason:  string(v1beta1.ListenerReasonInvalidRouteKinds),
+			Message: msg,
+		},
+		NewListenerNotProgrammedInvalid(msg),
+	}
+}
+
 // NewListenerProtocolConflict returns Conditions that indicate multiple Listeners are specified with the same
 // Listener port number, but have conflicting protocol specifications.
 func NewListenerProtocolConflict(msg string) []Condition {
diff --git a/internal/state/graph/gateway_listener.go b/internal/state/graph/gateway_listener.go
index f743625e9..87512dd72 100644
--- a/internal/state/graph/gateway_listener.go
+++ b/internal/state/graph/gateway_listener.go
@@ -223,7 +223,7 @@ func validateListenerAllowedRouteKind(listener v1beta1.Listener) []conditions.Co
 			for _, kind := range listener.AllowedRoutes.Kinds {
 				if !validHTTPRouteKind(kind) {
 					msg := fmt.Sprintf("Unsupported route kind \"%s/%s\"", *kind.Group, kind.Kind)
-					return conditions.NewListenerUnsupportedValue(msg)
+					return conditions.NewListenerInvalidRouteKinds(msg)
 				}
 			}
 		}