diff --git a/internal/pkg/rpaas/k8s.go b/internal/pkg/rpaas/k8s.go
index 690bb34af..9c4b696c2 100644
--- a/internal/pkg/rpaas/k8s.go
+++ b/internal/pkg/rpaas/k8s.go
@@ -1290,9 +1290,8 @@ func (m *k8sRpaasManager) validateFlavors(ctx context.Context, instance *v1alpha
 			return &ValidationError{Msg: fmt.Sprintf("flavor %q can used only in the creation of instance", f)}
 		}
 
-		incompatibleFlavor := checkIncompatibleFlavors(flavorObj.Spec.IncompatibleFlavors, flavors)
-		if incompatibleFlavor != "" {
-			return &ValidationError{Msg: fmt.Sprintf("flavor %q is incompatible with %q flavor", f, incompatibleFlavor)}
+		if validationError := checkForIncompatibleFlavors(flavorObj.Spec.IncompatibleFlavors, flavors, f); validationError != nil {
+			return validationError
 		}
 	}
 
@@ -1326,16 +1325,18 @@ func diffFlavors(existing, updated []string) (added, removed []string) {
 	return
 }
 
-func checkIncompatibleFlavors(incompatibleFlavors, allFlavors []string) string {
+func checkForIncompatibleFlavors(incompatibleFlavors, allFlavors []string, checkedFlavor string) error {
 	if len(incompatibleFlavors) > 0 {
 		for _, incompatibleFlavor := range incompatibleFlavors {
 			if contains(allFlavors, incompatibleFlavor) {
-				return incompatibleFlavor
+				return &ValidationError{
+					Msg: fmt.Sprintf("flavor %q is incompatible with %q flavor", checkedFlavor, incompatibleFlavor),
+				}
 			}
 		}
 	}
 
-	return ""
+	return nil
 }
 
 func isBlockTypeAllowed(bt v1alpha1.BlockType) bool {