diff --git a/src/Mod/Sketcher/App/planegcs/GCS.cpp b/src/Mod/Sketcher/App/planegcs/GCS.cpp
index a7979ffcd..a63ce3b70 100644
--- a/src/Mod/Sketcher/App/planegcs/GCS.cpp
+++ b/src/Mod/Sketcher/App/planegcs/GCS.cpp
@@ -175,7 +175,7 @@ System::System()
   maxIter(100), maxIterRedundant(100), 
   sketchSizeMultiplier(true), sketchSizeMultiplierRedundant(true),
   convergence(1e-10), convergenceRedundant(1e-10),
-  qrAlgorithm(EigenDenseQR), debugMode(Minimal),
+  qrAlgorithm(EigenSparseQR), debugMode(Minimal),
   LM_eps(1E-10), LM_eps1(1E-80), LM_tau(1E-3),
   DL_tolg(1E-80), DL_tolx(1E-80), DL_tolf(1E-10),
   LM_epsRedundant(1E-10), LM_eps1Redundant(1E-80), LM_tauRedundant(1E-3),
diff --git a/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.cpp b/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.cpp
index 8eb6c4687..d7d90281a 100644
--- a/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.cpp
+++ b/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.cpp
@@ -54,7 +54,7 @@
 #define MAX_ITER 100
 #define DEFAULT_SOLVER 2            // DL=2, LM=1, BFGS=0
 #define DEFAULT_RSOLVER 2           // DL=2, LM=1, BFGS=0
-#define DEFAULT_QRSOLVER 0          // DENSE=0, SPARSEQR=1
+#define DEFAULT_QRSOLVER 1          // DENSE=0, SPARSEQR=1
 #define QR_PIVOT_THRESHOLD 1E-13    // under this value a Jacobian value is regarded as zero
 #define DEFAULT_SOLVER_DEBUG 1      // None=0, Minimal=1, IterationLevel=2
 #define MAX_ITER_MULTIPLIER true    
diff --git a/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.ui b/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.ui
index a9e194ad0..7d26cd91f 100644
--- a/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.ui
+++ b/src/Mod/Sketcher/Gui/TaskSketcherSolverAdvanced.ui
@@ -245,7 +245,7 @@
      <item>
       <widget class="Gui::PrefComboBox" name="comboBoxQRMethod">
        <property name="currentIndex">
-        <number>0</number>
+        <number>1</number>
        </property>
        <property name="prefEntry" stdset="0">
         <cstring>QRMethod</cstring>