diff --git a/PWGCF/GenericFramework/Tasks/flowGfwV02.cxx b/PWGCF/GenericFramework/Tasks/flowGfwV02.cxx
index b921074a4f8..35931370294 100644
--- a/PWGCF/GenericFramework/Tasks/flowGfwV02.cxx
+++ b/PWGCF/GenericFramework/Tasks/flowGfwV02.cxx
@@ -244,22 +244,22 @@ struct FlowGfwV02 {
     std::array<float, 6> tofNsigmaCut;
     std::array<float, 6> itsNsigmaCut;
     std::array<float, 6> tpcNsigmaCut;
-    TH1D* hPtMid[4] = {nullptr, nullptr, nullptr, nullptr};
+    std::array<std::unique_ptr<TH1D>, 4> hPtMid{};
   };
   PIDState pidStates;
 
   // Event selection cuts - Alex
-  TF1* fMultPVCutLow = nullptr;
-  TF1* fMultPVCutHigh = nullptr;
-  TF1* fMultCutLow = nullptr;
-  TF1* fMultCutHigh = nullptr;
-  TF1* fMultPVGlobalCutHigh = nullptr;
-  TF1* fMultGlobalV0ACutLow = nullptr;
-  TF1* fMultGlobalV0ACutHigh = nullptr;
-  TF1* fMultGlobalT0ACutLow = nullptr;
-  TF1* fMultGlobalT0ACutHigh = nullptr;
-
-  TF1* fPtDepDCAxy = nullptr;
+  std::unique_ptr<TF1> fMultPVCutLow;
+  std::unique_ptr<TF1> fMultPVCutHigh;
+  std::unique_ptr<TF1> fMultCutLow;
+  std::unique_ptr<TF1> fMultCutHigh;
+  std::unique_ptr<TF1> fMultPVGlobalCutHigh;
+  std::unique_ptr<TF1> fMultGlobalV0ACutLow;
+  std::unique_ptr<TF1> fMultGlobalV0ACutHigh;
+  std::unique_ptr<TF1> fMultGlobalT0ACutLow;
+  std::unique_ptr<TF1> fMultGlobalT0ACutHigh;
+
+  std::unique_ptr<TF1> fPtDepDCAxy;
 
   using GFWTracks = soa::Filtered<soa::Join<aod::Tracks, aod::TracksExtra, aod::TrackSelection, aod::TracksDCA, aod::pidTPCFullPi, aod::pidTPCFullKa, aod::pidTPCFullPr, aod::pidTOFbeta, aod::pidTOFFullPi, aod::pidTOFFullKa, aod::pidTOFFullPr>>;
 
@@ -361,10 +361,10 @@ struct FlowGfwV02 {
     o2::analysis::gfw::multGlobalPVCorrCutPars = cfgMultCorrCuts.cfgMultGlobalPVCutPars;
 
     // Initialise pt spectra histograms for different particles
-    pidStates.hPtMid[PidCharged] = new TH1D("hPtMid_charged", "hPtMid_charged", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
-    pidStates.hPtMid[PidPions] = new TH1D("hPtMid_pions", "hPtMid_pions", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
-    pidStates.hPtMid[PidKaons] = new TH1D("hPtMid_kaons", "hPtMid_kaons", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
-    pidStates.hPtMid[PidProtons] = new TH1D("hPtMid_protons", "hPtMid_protons", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
+    pidStates.hPtMid[PidCharged] = std::make_unique<TH1D>("hPtMid_charged", "hPtMid_charged", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
+    pidStates.hPtMid[PidPions] = std::make_unique<TH1D>("hPtMid_pions", "hPtMid_pions", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
+    pidStates.hPtMid[PidKaons] = std::make_unique<TH1D>("hPtMid_kaons", "hPtMid_kaons", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
+    pidStates.hPtMid[PidProtons] = std::make_unique<TH1D>("hPtMid_protons", "hPtMid_protons", o2::analysis::gfw::ptbinning.size() - 1, &o2::analysis::gfw::ptbinning[0]);
     pidStates.hPtMid[PidCharged]->SetDirectory(nullptr);
     pidStates.hPtMid[PidPions]->SetDirectory(nullptr);
     pidStates.hPtMid[PidKaons]->SetDirectory(nullptr);
@@ -466,6 +466,7 @@ struct FlowGfwV02 {
       LOGF(error, "Configuration contains vectors of different size - check the GFWCorrConfig configurable");
     fGFW->CreateRegions();
     TObjArray* oba = new TObjArray();
+    oba->SetOwner(kTRUE);
     addConfigObjectsToObjArray(oba, corrconfigs);
     LOGF(info, "Number of correlators: %d", oba->GetEntries());
     fFC->SetName("FlowContainer");
@@ -501,19 +502,19 @@ struct FlowGfwV02 {
     }
 
     if (cfgUseAdditionalEventCut) {
-      fMultPVCutLow = new TF1("fMultPVCutLow", cfgMultCorrCuts.cfgMultCorrLowCutFunction->c_str(), 0, 100);
+      fMultPVCutLow = std::make_unique<TF1>("fMultPVCutLow", cfgMultCorrCuts.cfgMultCorrLowCutFunction->c_str(), 0, 100);
       fMultPVCutLow->SetParameters(&(o2::analysis::gfw::multPVCorrCutPars[0]));
-      fMultPVCutHigh = new TF1("fMultPVCutHigh", cfgMultCorrCuts.cfgMultCorrHighCutFunction->c_str(), 0, 100);
+      fMultPVCutHigh = std::make_unique<TF1>("fMultPVCutHigh", cfgMultCorrCuts.cfgMultCorrHighCutFunction->c_str(), 0, 100);
       fMultPVCutHigh->SetParameters(&(o2::analysis::gfw::multPVCorrCutPars[0]));
-      fMultCutLow = new TF1("fMultCutLow", cfgMultCorrCuts.cfgMultCorrLowCutFunction->c_str(), 0, 100);
+      fMultCutLow = std::make_unique<TF1>("fMultCutLow", cfgMultCorrCuts.cfgMultCorrLowCutFunction->c_str(), 0, 100);
       fMultCutLow->SetParameters(&(o2::analysis::gfw::multGlobalCorrCutPars[0]));
-      fMultCutHigh = new TF1("fMultCutHigh", cfgMultCorrCuts.cfgMultCorrHighCutFunction->c_str(), 0, 100);
+      fMultCutHigh = std::make_unique<TF1>("fMultCutHigh", cfgMultCorrCuts.cfgMultCorrHighCutFunction->c_str(), 0, 100);
       fMultCutHigh->SetParameters(&(o2::analysis::gfw::multGlobalCorrCutPars[0]));
-      fMultPVGlobalCutHigh = new TF1("fMultPVGlobalCutHigh", cfgMultCorrCuts.cfgMultGlobalPVCorrCutFunction->c_str(), 0, nchbinning.back());
+      fMultPVGlobalCutHigh = std::make_unique<TF1>("fMultPVGlobalCutHigh", cfgMultCorrCuts.cfgMultGlobalPVCorrCutFunction->c_str(), 0, nchbinning.back());
       fMultPVGlobalCutHigh->SetParameters(&(o2::analysis::gfw::multGlobalPVCorrCutPars[0]));
     }
     // Set DCAxy cut
-    fPtDepDCAxy = new TF1("ptDepDCAxy", Form("[0]*%s", cfgTrackCuts.cfgDCAxy->c_str()), 0.001, 100);
+    fPtDepDCAxy = std::make_unique<TF1>("ptDepDCAxy", Form("[0]*%s", cfgTrackCuts.cfgDCAxy->c_str()), 0.001, 100);
     fPtDepDCAxy->SetParameter(0, cfgTrackCuts.cfgDCAxyNSigma);
   }