diff --git a/src/Mod/Sketcher/App/CMakeLists.txt b/src/Mod/Sketcher/App/CMakeLists.txt
index 50f02edfd..43a7b3c8c 100644
--- a/src/Mod/Sketcher/App/CMakeLists.txt
+++ b/src/Mod/Sketcher/App/CMakeLists.txt
@@ -10,7 +10,7 @@ if (OPENMP_FOUND)
     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
 endif()
 
-set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DEIGEN_NO_DEBUG") # Necessary to avoid SparseQR crash with Eigen 3.2 due to a wrong assertion
+# set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DEIGEN_NO_DEBUG") # Necessary to avoid SparseQR crash with Eigen 3.2 due to a wrong assertion
 
 include_directories(
     ${CMAKE_BINARY_DIR}
diff --git a/src/Mod/Sketcher/App/planegcs/GCS.cpp b/src/Mod/Sketcher/App/planegcs/GCS.cpp
index 43af042a4..ae3cf1680 100644
--- a/src/Mod/Sketcher/App/planegcs/GCS.cpp
+++ b/src/Mod/Sketcher/App/planegcs/GCS.cpp
@@ -162,7 +162,7 @@ System::System()
   maxIter(100), maxIterRedundant(100), 
   sketchSizeMultiplier(true), sketchSizeMultiplierRedundant(true),
   convergence(1e-10), convergenceRedundant(1e-10),
-  qrAlgorithm(EigenSparseQR), debugMode(Minimal),
+  qrAlgorithm(EigenDenseQR), 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 c64e48c59..bda2f65c6 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 1          // DENSE=0, SPARSEQR=1
+#define DEFAULT_QRSOLVER 0          // DENSE=0, SPARSEQR=1
 #define DEFAULT_SOLVER_DEBUG 1      // None=0, Minimal=1, IterationLevel=2
 #define MAX_ITER_MULTIPLIER true