diff --git a/Alignment/OfflineValidation/plugins/OverlapValidation.cc b/Alignment/OfflineValidation/plugins/OverlapValidation.cc
index 56c772cc1705a..5c4c07624be4e 100644
--- a/Alignment/OfflineValidation/plugins/OverlapValidation.cc
+++ b/Alignment/OfflineValidation/plugins/OverlapValidation.cc
@@ -383,7 +383,7 @@ void OverlapValidation::analyzeTrajectory(const Trajectory& trajectory,
     ++overlapCounts_[1];
     if ((layer != -1) && (acceptLayer[subDet])) {
       for (vector<TrajectoryMeasurement>::const_iterator itmCompare = itm - 1;
-           itmCompare >= measurements.begin() && itmCompare > itm - 4;
+           (itmCompare >= measurements.begin()) && ((itmCompare + 4) > itm);
            --itmCompare) {
         DetId compareId = itmCompare->recHit()->geographicalId();
 
diff --git a/Alignment/TrackerAlignment/plugins/TkAlCaOverlapTagger.cc b/Alignment/TrackerAlignment/plugins/TkAlCaOverlapTagger.cc
index 1aa11fff757fd..6acf009cea449 100644
--- a/Alignment/TrackerAlignment/plugins/TkAlCaOverlapTagger.cc
+++ b/Alignment/TrackerAlignment/plugins/TkAlCaOverlapTagger.cc
@@ -126,7 +126,7 @@ void TkAlCaOverlapTagger::produce(edm::Event& iEvent, const edm::EventSetup& iSe
 
       if ((previousTM != nullptr) && (layer != -1)) {
         for (std::vector<TrajectoryMeasurement>::const_iterator itmCompare = itTrajMeas - 1;
-             itmCompare >= tmColl.begin() && itmCompare > itTrajMeas - 4;
+             (itmCompare >= tmColl.begin()) && ((itmCompare + 4) > itTrajMeas);
              --itmCompare) {
           DetId compareId = itmCompare->recHit()->geographicalId();
           if (subDet != compareId.subdetId() || layer != layerFromId(compareId, tTopo))
diff --git a/Calibration/Tools/src/HouseholderDecomposition.cc b/Calibration/Tools/src/HouseholderDecomposition.cc
index 5bc1d1a910f73..e9377d62ea969 100644
--- a/Calibration/Tools/src/HouseholderDecomposition.cc
+++ b/Calibration/Tools/src/HouseholderDecomposition.cc
@@ -442,7 +442,7 @@ void HouseholderDecomposition::solve(std::vector<float>& y) {
 
   for (i = Nchannels - 2; i >= 0; i--) {
     z[i] = energyVectorProc[i];
-    for (j = i + 1; j < Nchannels; j++) {
+    for (j = i + 1; j - Nchannels < 0; j++) {
       z[i] -= eventMatrixProc[i][j] * z[j];
     }
     z[i] /= alpha[i];