diff --git a/DynareBison.yy b/DynareBison.yy
index 7c918a1df106f0e482eb0429057f6825e6b98a52..640ad465428ff0d9cb367692a6418d2de7a8b98e 100644
--- a/DynareBison.yy
+++ b/DynareBison.yy
@@ -143,7 +143,7 @@ class ParsingDriver;
 %token ASINH ACOSH ATANH SQRT NORMCDF NORMPDF STEADY_STATE EXPECTATION
 /* GSA analysis */
 %token DYNARE_SENSITIVITY MORRIS STAB REDFORM PPRIOR PRIOR_RANGE PPOST ILPTAU MORRIS_NLIV
-%token MORRIS_NTRA NSAM LOAD_REDFORM LOAD_RMSE LOAD_STAB ALPHA2_STAB KSSTAT LOGTRANS_REDFORM THRESHOLD_REDFORM
+%token MORRIS_NTRA NSAM LOAD_REDFORM LOAD_RMSE LOAD_STAB ALPHA2_STAB LOGTRANS_REDFORM THRESHOLD_REDFORM
 %token KSSTAT_REDFORM ALPHA2_REDFORM NAMENDO NAMLAGENDO NAMEXO RMSE LIK_ONLY VAR_RMSE PFILT_RMSE ISTART_RMSE
 %token ALPHA_RMSE ALPHA2_RMSE
 /* end of GSA analysis*/
@@ -2480,7 +2480,6 @@ dynare_sensitivity_option : o_gsa_identification
                           | o_gsa_load_rmse
                           | o_gsa_load_stab
                           | o_gsa_alpha2_stab
-                          | o_gsa_ksstat
                           | o_gsa_logtrans_redform
                           | o_gsa_ksstat_redform
                           | o_gsa_alpha2_redform
@@ -3112,7 +3111,6 @@ o_gsa_load_redform : LOAD_REDFORM EQUAL INT_NUMBER { driver.option_num("load_red
 o_gsa_load_rmse : LOAD_RMSE EQUAL INT_NUMBER { driver.option_num("load_rmse", $3); };
 o_gsa_load_stab : LOAD_STAB EQUAL INT_NUMBER { driver.option_num("load_stab", $3); };
 o_gsa_alpha2_stab : ALPHA2_STAB EQUAL non_negative_number { driver.option_num("alpha2_stab", $3); };
-o_gsa_ksstat : KSSTAT EQUAL non_negative_number { driver.option_num("ksstat", $3); };
 o_gsa_logtrans_redform : LOGTRANS_REDFORM EQUAL INT_NUMBER { driver.option_num("logtrans_redform", $3); };
 o_gsa_threshold_redform : THRESHOLD_REDFORM EQUAL vec_value_w_inf { driver.option_num("threshold_redform",$3); };
 o_gsa_ksstat_redform : KSSTAT_REDFORM EQUAL non_negative_number { driver.option_num("ksstat_redform", $3); };
diff --git a/DynareFlex.ll b/DynareFlex.ll
index 262d7a354c930a9398642d618be1d41bbe06d42a..b0620ab7f0af1dd0a353f175b803525520d4e50a 100644
--- a/DynareFlex.ll
+++ b/DynareFlex.ll
@@ -800,7 +800,6 @@ DATE -?[0-9]+([YyAa]|[Mm]([1-9]|1[0-2])|[Qq][1-4]|[Ww]([1-9]{1}|[1-4][0-9]|5[0-2
 <DYNARE_STATEMENT>load_rmse {return token::LOAD_RMSE;}
 <DYNARE_STATEMENT>load_stab {return token::LOAD_STAB;}
 <DYNARE_STATEMENT>alpha2_stab {return token::ALPHA2_STAB;}
-<DYNARE_STATEMENT>ksstat {return token::KSSTAT;}
 <DYNARE_STATEMENT>logtrans_redform {return token::LOGTRANS_REDFORM;}
 <DYNARE_STATEMENT>threshold_redform {return token::THRESHOLD_REDFORM;}
 <DYNARE_STATEMENT>ksstat_redform {return token::KSSTAT_REDFORM;}