From 6ff3738cffa1cd2919f22668df7c52993ee8a593 Mon Sep 17 00:00:00 2001
From: Giulio Eulisse <10544+ktf@users.noreply.github.com>
Date: Tue, 7 Nov 2023 11:33:09 +0100
Subject: [PATCH] C++20 needs vector to be well defined

---
 Detectors/MUON/MCH/Clustering/src/ClusterOriginal.h | 2 --
 Framework/Core/include/Framework/AnalysisHelpers.h  | 1 +
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/Detectors/MUON/MCH/Clustering/src/ClusterOriginal.h b/Detectors/MUON/MCH/Clustering/src/ClusterOriginal.h
index da47976b00a63..daca95e683365 100644
--- a/Detectors/MUON/MCH/Clustering/src/ClusterOriginal.h
+++ b/Detectors/MUON/MCH/Clustering/src/ClusterOriginal.h
@@ -27,8 +27,6 @@ namespace o2
 namespace mch
 {
 
-class PadOriginal;
-
 /// cluster for internal use
 class ClusterOriginal
 {
diff --git a/Framework/Core/include/Framework/AnalysisHelpers.h b/Framework/Core/include/Framework/AnalysisHelpers.h
index b382d4f11b265..e5299c7a91b99 100644
--- a/Framework/Core/include/Framework/AnalysisHelpers.h
+++ b/Framework/Core/include/Framework/AnalysisHelpers.h
@@ -23,6 +23,7 @@
 #include "Framework/Output.h"
 #include "Framework/IndexBuilderHelpers.h"
 #include "Framework/Plugins.h"
+#include "Framework/ExpressionHelpers.h"
 
 #include <string>
 namespace o2::framework