diff --git a/src/Mod/Sketcher/Gui/CommandConstraints.cpp b/src/Mod/Sketcher/Gui/CommandConstraints.cpp
index 3249c20491..5238dd568a 100644
--- a/src/Mod/Sketcher/Gui/CommandConstraints.cpp
+++ b/src/Mod/Sketcher/Gui/CommandConstraints.cpp
@@ -1445,9 +1445,9 @@ void CmdSketcherConstrainLock::activated(int iMsg)
 
         lastconstraintindex+=2;
 
-        if (edgeisblocked || GeoId[0] <= Sketcher::GeoEnum::RefExt
-                || isBsplineKnot(Obj,GeoId[0])
-                || constraintCreationMode==Reference) {
+        if (edgeisblocked
+            || GeoId[0] <= Sketcher::GeoEnum::RefExt
+            || constraintCreationMode==Reference) {
             // it is a constraint on a external line, make it non-driving
 
             Gui::cmdAppObjectArgs(selection[0].getObject(), "setDriving(%i,%s)",
@@ -2287,7 +2287,7 @@ void CmdSketcherConstrainDistance::activated(int iMsg)
 
             // it is a constraint on a external line, make it non-driving
             if (arebothpointsorsegmentsfixed || GeoId1 <= Sketcher::GeoEnum::RefExt ||
-                isBsplineKnot(Obj,GeoId1) || constraintCreationMode==Reference) {
+                constraintCreationMode==Reference) {
                 const std::vector<Sketcher::Constraint *> &ConStr = Obj->Constraints.getValues();
 
                 Gui::cmdAppObjectArgs(selection[0].getObject(), "setDriving(%i,%s)",
@@ -2379,9 +2379,8 @@ void CmdSketcherConstrainDistance::applyConstraint(std::vector<SelIdPair> &selSe
                 GeoId1,ActLength);
 
             if (arebothpointsorsegmentsfixed
-                    || GeoId1 <= Sketcher::GeoEnum::RefExt
-                    || isBsplineKnot(Obj,GeoId1)
-                    || constraintCreationMode==Reference) {
+                || GeoId1 <= Sketcher::GeoEnum::RefExt
+                || constraintCreationMode==Reference) {
                 // it is a constraint on a external line, make it non-driving
                 const std::vector<Sketcher::Constraint *> &ConStr = Obj->Constraints.getValues();
 
@@ -3104,8 +3103,7 @@ void CmdSketcherConstrainDistanceY::activated(int iMsg)
             GeoId1,static_cast<int>(PosId1),ActY);
 
         if (GeoId1 <= Sketcher::GeoEnum::RefExt
-                || isBsplineKnot(Obj,GeoId1)
-                || constraintCreationMode==Reference) {
+            || constraintCreationMode==Reference) {
             // it is a constraint on a external line, make it non-driving
             const std::vector<Sketcher::Constraint *> &ConStr = Obj->Constraints.getValues();
 
diff --git a/src/Mod/Sketcher/Gui/Utils.cpp b/src/Mod/Sketcher/Gui/Utils.cpp
index b1f669ce6a..5a24fd2fea 100644
--- a/src/Mod/Sketcher/Gui/Utils.cpp
+++ b/src/Mod/Sketcher/Gui/Utils.cpp
@@ -160,15 +160,6 @@ bool SketcherGui::checkBothExternal(int GeoId1, int GeoId2)
         return (GeoId1 < 0 && GeoId2 < 0);
 }
 
-bool SketcherGui::checkBothExternalOrBSplinePoints(const Sketcher::SketchObject* Obj,int GeoId1, int GeoId2)
-{
-    if (GeoId1 == GeoEnum::GeoUndef || GeoId2 == GeoEnum::GeoUndef)
-        return false;
-    else
-        return (GeoId1 < 0 && GeoId2 < 0) || (isBsplineKnot(Obj,GeoId1) && isBsplineKnot(Obj,GeoId2)) ||
-        (GeoId1 < 0 && isBsplineKnot(Obj,GeoId2)) || (GeoId2 < 0 && isBsplineKnot(Obj,GeoId1));
-}
-
 bool SketcherGui::isPointOrSegmentFixed(const Sketcher::SketchObject* Obj, int GeoId)
 {
     const std::vector< Sketcher::Constraint * > &vals = Obj->Constraints.getValues();
@@ -176,7 +167,7 @@ bool SketcherGui::isPointOrSegmentFixed(const Sketcher::SketchObject* Obj, int G
     if (GeoId == GeoEnum::GeoUndef)
         return false;
     else
-        return checkConstraint(vals, Sketcher::Block, GeoId, Sketcher::PointPos::none) || GeoId <= Sketcher::GeoEnum::RtPnt || isBsplineKnot(Obj,GeoId);
+        return checkConstraint(vals, Sketcher::Block, GeoId, Sketcher::PointPos::none) || GeoId <= Sketcher::GeoEnum::RtPnt;
 }
 
 bool SketcherGui::areBothPointsOrSegmentsFixed(const Sketcher::SketchObject* Obj, int GeoId1, int GeoId2)
@@ -186,8 +177,8 @@ bool SketcherGui::areBothPointsOrSegmentsFixed(const Sketcher::SketchObject* Obj
     if (GeoId1 == GeoEnum::GeoUndef || GeoId2 == GeoEnum::GeoUndef)
         return false;
     else
-        return ((checkConstraint(vals, Sketcher::Block, GeoId1, Sketcher::PointPos::none) || GeoId1 <= Sketcher::GeoEnum::RtPnt || isBsplineKnot(Obj,GeoId1)) &&
-                (checkConstraint(vals, Sketcher::Block, GeoId2, Sketcher::PointPos::none) || GeoId2 <= Sketcher::GeoEnum::RtPnt || isBsplineKnot(Obj,GeoId2)));
+        return ((checkConstraint(vals, Sketcher::Block, GeoId1, Sketcher::PointPos::none) || GeoId1 <= Sketcher::GeoEnum::RtPnt) &&
+                (checkConstraint(vals, Sketcher::Block, GeoId2, Sketcher::PointPos::none) || GeoId2 <= Sketcher::GeoEnum::RtPnt));
 }
 
 bool SketcherGui::areAllPointsOrSegmentsFixed(const Sketcher::SketchObject* Obj, int GeoId1, int GeoId2, int GeoId3)
@@ -197,9 +188,9 @@ bool SketcherGui::areAllPointsOrSegmentsFixed(const Sketcher::SketchObject* Obj,
     if (GeoId1 == GeoEnum::GeoUndef || GeoId2 == GeoEnum::GeoUndef || GeoId3 == GeoEnum::GeoUndef)
         return false;
     else
-        return ((checkConstraint(vals, Sketcher::Block, GeoId1, Sketcher::PointPos::none) || GeoId1 <= Sketcher::GeoEnum::RtPnt || isBsplineKnot(Obj,GeoId1)) &&
-                (checkConstraint(vals, Sketcher::Block, GeoId2, Sketcher::PointPos::none) || GeoId2 <= Sketcher::GeoEnum::RtPnt || isBsplineKnot(Obj,GeoId2)) &&
-                (checkConstraint(vals, Sketcher::Block, GeoId3, Sketcher::PointPos::none) || GeoId3 <= Sketcher::GeoEnum::RtPnt || isBsplineKnot(Obj,GeoId3)));
+        return ((checkConstraint(vals, Sketcher::Block, GeoId1, Sketcher::PointPos::none) || GeoId1 <= Sketcher::GeoEnum::RtPnt) &&
+                (checkConstraint(vals, Sketcher::Block, GeoId2, Sketcher::PointPos::none) || GeoId2 <= Sketcher::GeoEnum::RtPnt) &&
+                (checkConstraint(vals, Sketcher::Block, GeoId3, Sketcher::PointPos::none) || GeoId3 <= Sketcher::GeoEnum::RtPnt));
 }
 
 bool SketcherGui::isSimpleVertex(const Sketcher::SketchObject* Obj, int GeoId, PointPos PosId)
diff --git a/src/Mod/Sketcher/Gui/Utils.h b/src/Mod/Sketcher/Gui/Utils.h
index 6c0a1a1853..1bab078582 100644
--- a/src/Mod/Sketcher/Gui/Utils.h
+++ b/src/Mod/Sketcher/Gui/Utils.h
@@ -72,8 +72,6 @@ void getIdsFromName(const std::string &name, const Sketcher::SketchObject* Obj,
 
 bool checkBothExternal(int GeoId1, int GeoId2);
 
-bool checkBothExternalOrBSplinePoints(const Sketcher::SketchObject* Obj,int GeoId1, int GeoId2);
-
 bool isPointOrSegmentFixed(const Sketcher::SketchObject* Obj, int GeoId);
 
 bool areBothPointsOrSegmentsFixed(const Sketcher::SketchObject* Obj, int GeoId1, int GeoId2);