diff --git a/core/detectors/much/CbmMuchSectorRadial.cxx b/core/detectors/much/CbmMuchSectorRadial.cxx
index e0f9527f44029fa3e2a9e47a4542c0b73a7a76a8..dba77394a7501227428216f51a53c7e4c13e827c 100644
--- a/core/detectors/much/CbmMuchSectorRadial.cxx
+++ b/core/detectors/much/CbmMuchSectorRadial.cxx
@@ -1,6 +1,6 @@
 /* Copyright (C) 2012-2020 Petersburg Nuclear Physics Institute named by B.P.Konstantinov of National Research Centre "Kurchatov Institute", Gatchina
    SPDX-License-Identifier: GPL-3.0-only
-   Authors: Evgeny Kryshen [committer], Florian Uhlig */
+   Authors: Evgeny Kryshen [committer], Florian Uhlig , Apar Agarwal */
 
 /** CbmMuchSectorRadial.cxx
  *@author  E.Kryshen <e.kryshen@gsi.de>
@@ -37,10 +37,10 @@ CbmMuchSectorRadial::CbmMuchSectorRadial(Int_t detId, Int_t secId, Double_t r1,
   , fPhi2(0.)
   , fPadDphi((r2 - r1) / r1)
 {
-  if (phi2 < phi1) LOG(error) << "Panic!";
-  fNChannels = 2 * TMath::Ceil((phi2 - phi1) / 2 / fPadDphi);
-  fPhi1      = (phi1 + phi2) / 2 - fNChannels / 2 * fPadDphi;
-  fPhi2      = (phi1 + phi2) / 2 + fNChannels / 2 * fPadDphi;
+  if (phi2 < phi1) LOG(error) << "Error in description of module paramaters (phi1 > phi2)";
+  fNChannels = TMath::Ceil(((phi2 - phi1) / fPadDphi) - DBL_EPSILON);
+  fPhi1      = phi1;
+  fPhi2      = phi2;
 }
 // -----------------o--------------------------------------------------------
 
diff --git a/external/InstallGeometry.cmake b/external/InstallGeometry.cmake
index 9726a335ca5bcd6d10e26bdf376df19437cd2357..274b8bc6b0a8add8897c92fcbf1b4dd05fc3c80e 100644
--- a/external/InstallGeometry.cmake
+++ b/external/InstallGeometry.cmake
@@ -1,5 +1,5 @@
 
-set(GEOMETRY_VERSION c7d89e005b1f1d0baed271e5fe292886a13201c3)
+set(GEOMETRY_VERSION 8fbf605d896cda44147236453e6026a424291900)
 
 set(GEOMETRY_SRC_URL "https://git.cbm.gsi.de/CbmSoft/cbmroot_geometry.git")
 
diff --git a/external/InstallParameter.cmake b/external/InstallParameter.cmake
index 166b5b99afb342c3ab82370affbed272b9e3c172..4c016d35558ea683438c400e89092a3e31c0b803 100644
--- a/external/InstallParameter.cmake
+++ b/external/InstallParameter.cmake
@@ -1,4 +1,4 @@
-set(PARAMETER_VERSION 6e29512b5db4315f7307573460093546f70f079b)
+set(PARAMETER_VERSION 8e6118215398a0517712af64557100cf3fae2fde)
 
 set(PARAMETER_SRC_URL "https://git.cbm.gsi.de/CbmSoft/cbmroot_parameter.git")