diff --git a/PWGUD/TableProducer/UPCCandidateProducer.cxx b/PWGUD/TableProducer/UPCCandidateProducer.cxx
index b5bcd1cd848..670e6b1f158 100644
--- a/PWGUD/TableProducer/UPCCandidateProducer.cxx
+++ b/PWGUD/TableProducer/UPCCandidateProducer.cxx
@@ -876,7 +876,7 @@ struct UpcCandProducer {
         ++curit;
         if (curit == v.end())
           break;
-        curbc = curit->first;
+        // curbc = curit->first; // FIXME: unused
       }
       uint32_t size = curit->second.size();
       if (size > 1) // too many tracks per BC -> possibly another event
diff --git a/PWGUD/TableProducer/tauEventTableProducer.cxx b/PWGUD/TableProducer/tauEventTableProducer.cxx
index 2538415540f..d7e15959b85 100644
--- a/PWGUD/TableProducer/tauEventTableProducer.cxx
+++ b/PWGUD/TableProducer/tauEventTableProducer.cxx
@@ -513,7 +513,7 @@ struct TauEventTableProducer {
           if (verboseInfo)
             printLargeMessage("Truth collision has more than 1 reco collision. Skipping this event.");
           histos.get<TH1>(HIST("Truth/hTroubles"))->Fill(1);
-          problem = true;
+          // problem = true; // FIXME: unused
           continue;
         }
         // grap reco-level collision
diff --git a/PWGUD/TableProducer/twoTracksEventTableProducer.cxx b/PWGUD/TableProducer/twoTracksEventTableProducer.cxx
index cf5f91a34a6..3526401d72c 100644
--- a/PWGUD/TableProducer/twoTracksEventTableProducer.cxx
+++ b/PWGUD/TableProducer/twoTracksEventTableProducer.cxx
@@ -577,7 +577,7 @@ struct TwoTracksEventTableProducer {
           if (verboseInfo)
             printLargeMessage("Truth collision has more than 1 reco collision. Skipping this event.");
           histos.get<TH1>(HIST("Truth/hTroubles"))->Fill(1);
-          problem = true;
+          // problem = true; // FIXME: unused
           continue;
         }
         // grap reco-level collision
diff --git a/PWGUD/Tasks/diffQA.cxx b/PWGUD/Tasks/diffQA.cxx
index adc79e0c37f..b97b7e3eeb6 100644
--- a/PWGUD/Tasks/diffQA.cxx
+++ b/PWGUD/Tasks/diffQA.cxx
@@ -950,7 +950,7 @@ struct DiffQA {
     for (const auto& col : collisions) {
       bc1 = -1;
       bc2 = -2;
-      bc3 = -3;
+      // bc3 = -3; // FIXME: unused
       if (col.has_foundBC()) {
         auto bc = col.foundBC_as<BCs>();
         bc1 = bc.globalBC();
diff --git a/PWGUD/Tasks/exclusivePentaquark.cxx b/PWGUD/Tasks/exclusivePentaquark.cxx
index ed5b440add0..a37d73f1096 100644
--- a/PWGUD/Tasks/exclusivePentaquark.cxx
+++ b/PWGUD/Tasks/exclusivePentaquark.cxx
@@ -116,7 +116,7 @@ struct ExclusivePentaquark {
     int truegapSide = sgSelector.trueGap(collision, FV0_cut, FT0A_cut, FT0C_cut, ZDC_cut);
     registry.fill(HIST("GapSide"), gapSide);
     registry.fill(HIST("TrueGapSide"), truegapSide);
-    gapSide = truegapSide;
+    // gapSide = truegapSide;
     // if (gapSide != gap_Side) {
     //   return;
     // }
diff --git a/PWGUD/Tasks/exclusivePhiLeptons.cxx b/PWGUD/Tasks/exclusivePhiLeptons.cxx
index 9576ece02b5..383273a34cc 100644
--- a/PWGUD/Tasks/exclusivePhiLeptons.cxx
+++ b/PWGUD/Tasks/exclusivePhiLeptons.cxx
@@ -259,7 +259,7 @@ struct ExclusivePhiLeptons {
         registry.fill(HIST("hEta1"), onlyElectronTracks[1].Eta());
         resonance += onlyElectronTracks[0];
         resonance += onlyElectronTracks[1];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyElectronSigma[0] * onlyElectronSigma[0] + onlyElectronSigma[1] * onlyElectronSigma[1];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyElectronSigma[0], onlyElectronSigma[1]);
@@ -285,7 +285,7 @@ struct ExclusivePhiLeptons {
         registry.fill(HIST("hEta1"), onlyElectronTracksTOF[0].Eta());
         resonance += onlyElectronTracks[0];
         resonance += onlyElectronTracksTOF[0];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyElectronSigma[0] * onlyElectronSigma[0] + onlyElectronSigmaTOF[0] * onlyElectronSigmaTOF[0];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyElectronSigma[0], onlyElectronSigmaTOF[0]);
@@ -311,7 +311,7 @@ struct ExclusivePhiLeptons {
         registry.fill(HIST("hEta1"), onlyElectronTracksTOF[1].Eta());
         resonance += onlyElectronTracksTOF[0];
         resonance += onlyElectronTracksTOF[1];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyElectronSigmaTOF[0] * onlyElectronSigmaTOF[0] + onlyElectronSigmaTOF[1] * onlyElectronSigmaTOF[1];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyElectronSigmaTOF[0], onlyElectronSigmaTOF[1]);
diff --git a/PWGUD/Tasks/exclusivePhiLeptonsTrees.cxx b/PWGUD/Tasks/exclusivePhiLeptonsTrees.cxx
index 5a7ccd7a315..3bf485b55da 100644
--- a/PWGUD/Tasks/exclusivePhiLeptonsTrees.cxx
+++ b/PWGUD/Tasks/exclusivePhiLeptonsTrees.cxx
@@ -237,7 +237,7 @@ struct ExclusivePhiLeptonsTrees {
         resonance += onlyElectronTracks[1];
         a += onlyElectronTracks[0];
         b += onlyElectronTracks[1];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyElectronSigma[0] * onlyElectronSigma[0] + onlyElectronSigma[1] * onlyElectronSigma[1];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyElectronSigma[0], onlyElectronSigma[1]);
@@ -254,7 +254,7 @@ struct ExclusivePhiLeptonsTrees {
         resonance += onlyElectronTracksTOF[0];
         a += onlyElectronTracks[0];
         b += onlyElectronTracksTOF[0];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyElectronSigma[0] * onlyElectronSigma[0] + onlyElectronSigmaTOF[0] * onlyElectronSigmaTOF[0];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyElectronSigma[0], onlyElectronSigmaTOF[0]);
@@ -271,7 +271,7 @@ struct ExclusivePhiLeptonsTrees {
         resonance += onlyElectronTracksTOF[1];
         a += onlyElectronTracksTOF[0];
         b += onlyElectronTracksTOF[1];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyElectronSigmaTOF[0] * onlyElectronSigmaTOF[0] + onlyElectronSigmaTOF[1] * onlyElectronSigmaTOF[1];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyElectronSigmaTOF[0], onlyElectronSigmaTOF[1]);
diff --git a/PWGUD/Tasks/exclusiveTwoProtons.cxx b/PWGUD/Tasks/exclusiveTwoProtons.cxx
index 3b0b081dc86..5fea2cb18e7 100644
--- a/PWGUD/Tasks/exclusiveTwoProtons.cxx
+++ b/PWGUD/Tasks/exclusiveTwoProtons.cxx
@@ -284,7 +284,7 @@ struct ExclusiveTwoProtons {
         resonance += onlyProtonTracksTOF[0];
         a = onlyProtonTracks[0];
         b = onlyProtonTracksTOF[0];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyProtonSigma[0] * onlyProtonSigma[0] + onlyProtonSigmaTOF[0] * onlyProtonSigmaTOF[0];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyProtonSigma[0], onlyProtonSigmaTOF[0]);
@@ -327,7 +327,7 @@ struct ExclusiveTwoProtons {
         resonance += onlyProtonTracksTOF[1];
         a = onlyProtonTracksTOF[0];
         b = onlyProtonTracksTOF[1];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyProtonSigmaTOF[0] * onlyProtonSigmaTOF[0] + onlyProtonSigmaTOF[1] * onlyProtonSigmaTOF[1];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyProtonSigmaTOF[0], onlyProtonSigmaTOF[1]);
diff --git a/PWGUD/Tasks/exclusiveTwoProtonsSG.cxx b/PWGUD/Tasks/exclusiveTwoProtonsSG.cxx
index def67ca1bd0..a28473e7c41 100644
--- a/PWGUD/Tasks/exclusiveTwoProtonsSG.cxx
+++ b/PWGUD/Tasks/exclusiveTwoProtonsSG.cxx
@@ -311,7 +311,7 @@ struct ExclusiveTwoProtonsSG {
         resonance += onlyProtonTracksTOF[0];
         a = onlyProtonTracks[0];
         b = onlyProtonTracksTOF[0];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyProtonSigma[0] * onlyProtonSigma[0] + onlyProtonSigmaTOF[0] * onlyProtonSigmaTOF[0];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyProtonSigma[0], onlyProtonSigmaTOF[0]);
@@ -355,7 +355,7 @@ struct ExclusiveTwoProtonsSG {
         resonance += onlyProtonTracksTOF[1];
         a = onlyProtonTracksTOF[0];
         b = onlyProtonTracksTOF[1];
-        sigmaTotal = 0;
+        // sigmaTotal = 0; // FIXME: unused
         sigmaTotal = onlyProtonSigmaTOF[0] * onlyProtonSigmaTOF[0] + onlyProtonSigmaTOF[1] * onlyProtonSigmaTOF[1];
         ;
         registry.fill(HIST("hNsigEvsKa1"), onlyProtonSigmaTOF[0], onlyProtonSigmaTOF[1]);
diff --git a/PWGUD/Tasks/sgExclOmega.cxx b/PWGUD/Tasks/sgExclOmega.cxx
index cb8c298ce0f..14da74f4411 100644
--- a/PWGUD/Tasks/sgExclOmega.cxx
+++ b/PWGUD/Tasks/sgExclOmega.cxx
@@ -120,7 +120,7 @@ struct SGExclOmega {
     int truegapSide = sgSelector.trueGap(collision, FIT_cut[0], FIT_cut[1], FIT_cut[2], ZDC_cut);
     registry.fill(HIST("GapSide"), gapSide);
     registry.fill(HIST("TrueGapSide"), truegapSide);
-    gapSide = truegapSide;
+    // gapSide = truegapSide;
     // if (gapSide!=2) return;
     int pvtracks = 0;
     int esign = 0;
diff --git a/PWGUD/Tasks/sgSpectraAnalyzer.cxx b/PWGUD/Tasks/sgSpectraAnalyzer.cxx
index 2d0d577bb84..bd041e7269b 100644
--- a/PWGUD/Tasks/sgSpectraAnalyzer.cxx
+++ b/PWGUD/Tasks/sgSpectraAnalyzer.cxx
@@ -234,7 +234,7 @@ struct SGSpectraAnalyzer {
     int goodtracks = 0;
     int alltracks = 0;
     sum.SetXYZM(0, 0, 0, 0);
-    int gapSide = collision.gapSide();
+    int gapSide{}; // = collision.gapSide(); // FIXME: unused
     float FIT_cut[5] = {FV0_cut, FT0A_cut, FT0C_cut, FDDA_cut, FDDC_cut};
     std::vector<float> parameters = {PV_cut, dcaZ_cut, dcaXY_cut, tpcChi2_cut, tpcNClsFindable_cut, itsChi2_cut, eta_cut, pt_cut};
     int truegapSide = sgSelector.trueGap(collision, FIT_cut[0], FIT_cut[1], FIT_cut[2], ZDC_cut);