diff --git a/MMVII/include/MMVII_Topo.h b/MMVII/include/MMVII_Topo.h
index 8494aa1589..020809474b 100644
--- a/MMVII/include/MMVII_Topo.h
+++ b/MMVII/include/MMVII_Topo.h
@@ -26,7 +26,7 @@ class cBA_Topo : public cMemCheck
 {
     friend class cTopoData;
 public :
-    cBA_Topo(cPhotogrammetricProject *aPhProj, cMMVII_BundleAdj *aBA);
+    cBA_Topo(cPhotogrammetricProject *aPhProj);
     ~cBA_Topo();
     void clear();
 
@@ -50,7 +50,7 @@ public :
     bool tryInitAll();
     bool tryInit(cTopoPoint & aTopoPt, tStationsMap & stationsMap, tSimpleObsMap &allSimpleObs);
 
-    bool mergeUnknowns(cResolSysNonLinear<tREAL8> &aSys); //< if several stations share origin etc.
+    bool mergeUnknowns(); //< if several stations share origin etc.
     void makeConstraints(cResolSysNonLinear<tREAL8> &aSys);
     const std::map<std::string, cTopoPoint> & getAllPts() const { return mAllPts; }
     std::map<std::string, cTopoPoint> & getAllPts() { return mAllPts; }
diff --git a/MMVII/src/BundleAdjustment/cMMVII_BundleAdj.cpp b/MMVII/src/BundleAdjustment/cMMVII_BundleAdj.cpp
index 054d6adec7..144cc19ca2 100644
--- a/MMVII/src/BundleAdjustment/cMMVII_BundleAdj.cpp
+++ b/MMVII/src/BundleAdjustment/cMMVII_BundleAdj.cpp
@@ -709,7 +709,7 @@ void cMMVII_BundleAdj::SaveTopo()
 
 void cMMVII_BundleAdj::AddTopo() // TOPO
 {
-    mTopo = new cBA_Topo(mPhProj, this);
+    mTopo = new cBA_Topo(mPhProj);
 }
 
 }; // MMVII
diff --git a/MMVII/src/Topo/Topo.cpp b/MMVII/src/Topo/Topo.cpp
index ae6268b44b..5fccc34107 100644
--- a/MMVII/src/Topo/Topo.cpp
+++ b/MMVII/src/Topo/Topo.cpp
@@ -19,7 +19,7 @@ void cMMVII_BundleAdj::InitItereTopo()
 
 
 cBA_Topo::cBA_Topo
-(cPhotogrammetricProject *aPhProj, cMMVII_BundleAdj* aBA)  :
+(cPhotogrammetricProject *aPhProj)  :
     mPhProj  (aPhProj),
     mTopoObsType2equation
     {
@@ -82,7 +82,7 @@ void cBA_Topo::findPtsUnknowns(const std::vector<cBA_GCP*> & vGCP, cPhotogrammet
 {
     for (auto & [aName, aTopoPt] : getAllPts())
     {
-        aTopoPt.findUK(vGCP, aPhProj, aTopoPt.getInitCoord());
+        aTopoPt.findUK(vGCP, aPhProj);
     }
 }
 
@@ -236,7 +236,7 @@ void cBA_Topo::AddToSys(cSetInterUK_MultipeObj<tREAL8> & aSetInterUK)
         aSetInterUK.AddOneObj(anObsSet);
 }
 
-bool cBA_Topo::mergeUnknowns(cResolSysNonLinear<tREAL8> &aSys)
+bool cBA_Topo::mergeUnknowns()
 {
     bool ok = true;
     for (auto &set: mAllObsSets)
@@ -291,7 +291,7 @@ const cTopoPoint & cBA_Topo::getPoint(std::string name) const
 void cBA_Topo::SetFrozenAndSharedVars(cResolSysNonLinear<tREAL8> & aSys)
 {
      // create unknowns for all stations
-     mergeUnknowns(aSys); //
+     mergeUnknowns(); //
      makeConstraints(aSys);
 }
 
diff --git a/MMVII/src/Topo/ctopopoint.cpp b/MMVII/src/Topo/ctopopoint.cpp
index 5c2b908546..716280c15c 100644
--- a/MMVII/src/Topo/ctopopoint.cpp
+++ b/MMVII/src/Topo/ctopopoint.cpp
@@ -12,12 +12,6 @@ cTopoPoint::cTopoPoint(const std::string &name) :
 {
 }
 
-cTopoPoint::cTopoPoint(const std::string & name, const cPt3dr &aInitCoord, bool aIsFree, const cPt3dr &aSigmas) :
-    mName(name), mInitCoord(aInitCoord),
-    mVertDefl(std::nullopt), mUK(nullptr), mPt(nullptr)
-{
-}
-
 
 cTopoPoint::cTopoPoint() :
     mName(""), mInitCoord(cPt3dr::Dummy()), mVertDefl(std::nullopt),
@@ -26,7 +20,7 @@ cTopoPoint::cTopoPoint() :
 }
 
 
-void cTopoPoint::findUK(const std::vector<cBA_GCP *> & vGCP, cPhotogrammetricProject *aPhProj, const cPt3dr & aCoordIfPureTopo)
+void cTopoPoint::findUK(const std::vector<cBA_GCP *> & vGCP, cPhotogrammetricProject *aPhProj)
 {
 #ifdef VERBOSE_TOPO
     StdOut() << "findUK "<<mName<<": ";
diff --git a/MMVII/src/Topo/ctopopoint.h b/MMVII/src/Topo/ctopopoint.h
index 96990e71e6..cfabb44f9d 100644
--- a/MMVII/src/Topo/ctopopoint.h
+++ b/MMVII/src/Topo/ctopopoint.h
@@ -21,10 +21,9 @@ class cTopoPoint : public cMemCheck
     friend class cTopoData;
 public:
     cTopoPoint(const std::string & name);
-    cTopoPoint(const std::string & name, const cPt3dr &aInitCoord, bool aIsFree, const cPt3dr &aSigmas);
     cTopoPoint();
 
-    void findUK(const std::vector<cBA_GCP *> &vGCP, cPhotogrammetricProject *aPhProj, const cPt3dr &aCoordIfPureTopo); //< all params can be null
+    void findUK(const std::vector<cBA_GCP *> &vGCP, cPhotogrammetricProject *aPhProj); //< all params can be null
     cPt3dr* getPt() const;
     cObjWithUnkowns<tREAL8>* getUK() const;
     bool isReady() const { return mUK!=nullptr; } //< ready after findOrMakeUK. Can't use in equations if not ready