diff --git a/FWI/conf/fwiVAcoustic_inversion_C2.conf b/FWI/conf/fwiVAcoustic_inversion_C2.conf
index 7c2a5b8431ee4461badb6c07fd1aa0102ca72e2c..d633adae3968bb76faa852f00ab271deb1db9c5b 100644
--- a/FWI/conf/fwiVAcoustic_inversion_C2.conf
+++ b/FWI/conf/fwiVAcoustic_inversion_C2.conf
@@ -17,10 +17,12 @@ centery = 369;
 f_source = 25;
 numL =1;
 #source_factor = 100000;
-measurement_space = cellavg;
+#measurement_space = cellavg;
+measurement_space = point; # works with STDC, but CG-REGINN fails after one inner step
 measurement_time = point;
 compMeasure = 0;
-sourceSpace = 1; # cellavg
+#sourceSpace = 1; # cellavg
+sourceSpace = 2;  # point
 source_component = 2;
 
 allowPlotting_M =1;
@@ -54,7 +56,7 @@ LinearVerbose = -1;
 LinearSteps =100;
 LinearNthIterOutput = 1;
 
-############################# unused Settings (so far)
+#############################
 FWINonlinearSolver = FWISteepestDescent;
 #FWINonlinearSolver = FWI_CGREGINN;
 #FWIReconstructRho    = 0;
@@ -77,7 +79,7 @@ FWI_STDCLineSearchFactor = 0.3333333333333333;
 
 FWI_CGREGINNVerbose = 2;
 FWI_CGREGINNSteps = 5;
-FWI_CGREGINN_MaxInnerLoopSteps = 10;
+FWI_CGREGINN_MaxInnerLoopSteps = 20;
 FWI_CGREGINN_ThetaMax = 0.999
 FWI_CGREGINN_Gamma = 0.9;
 FWIMeasurementKernel = ST_L1;