diff --git a/server/bennu-core/src/main/java/org/fenixedu/bennu/core/groups/IntersectionGroup.java b/server/bennu-core/src/main/java/org/fenixedu/bennu/core/groups/IntersectionGroup.java
index 4bc4a1572..a730c62eb 100644
--- a/server/bennu-core/src/main/java/org/fenixedu/bennu/core/groups/IntersectionGroup.java
+++ b/server/bennu-core/src/main/java/org/fenixedu/bennu/core/groups/IntersectionGroup.java
@@ -54,7 +54,7 @@ public static Group of(Group... groups) {
     }
 
     public static Group of(Stream<Group> groups) {
-        return groups.reduce(NobodyGroup.get(), (result, group) -> result.and(group));
+        return groups.reduce((result, group) -> result.and(group)).orElseGet(NobodyGroup::get);
     }
 
     @Override