diff --git a/DynareBison.yy b/DynareBison.yy
index c4e8c4de..133fad2b 100644
--- a/DynareBison.yy
+++ b/DynareBison.yy
@@ -159,7 +159,7 @@ class ParsingDriver;
 %token SVAR COEFFICIENTS VARIANCES CONSTANTS EQUATIONS
 %token EXTERNAL_FUNCTION EXT_FUNC_NAME EXT_FUNC_NARGS FIRST_DERIV_PROVIDED SECOND_DERIV_PROVIDED
 %token SELECTED_VARIABLES_ONLY COVA_COMPUTE ESTIMATION_FILE_TAG SIMULATION_FILE_TAG FILE_TAG
-%token NO_ERROR_BANDS ERROR_BAND_PERCENTILES SHOCKS_PER_PARAMETER INITIALIZATION_FILE_TAG
+%token NO_ERROR_BANDS ERROR_BAND_PERCENTILES SHOCKS_PER_PARAMETER NO_CREATE_INIT
 %token SHOCK_DRAWS FREE_PARAMETERS MEDIAN DATA_OBS_NBR NEIGHBORHOOD_WIDTH PVALUE_KS PVALUE_CORR
 %token FILTERED_PROBABILITIES FILTERED REAL_TIME_SMOOTHED
 %token PROPOSAL_TYPE MDD_PROPOSAL_DRAWS MDD_USE_MEAN_CENTER
@@ -1630,7 +1630,7 @@ ms_estimation_option : o_coefficients_prior_hyperparameters
                      | o_gsig2_lmdm
                      | o_output_file_tag
                      | o_file_tag
-                     | o_initialization_file_tag
+                     | o_no_create_init
                      | o_convergence_starting_value
                      | o_convergence_ending_value
                      | o_convergence_increment_value
@@ -2087,7 +2087,7 @@ o_cova_compute : COVA_COMPUTE EQUAL INT_NUMBER
                ;
 o_output_file_tag : OUTPUT_FILE_TAG EQUAL filename {driver.option_str("ms.output_file_tag", $3); };
 o_file_tag : FILE_TAG EQUAL filename { driver.option_str("ms.file_tag", $3); };
-o_initialization_file_tag : INITIALIZATION_FILE_TAG EQUAL filename { driver.option_str("ms.initialization_file_tag", $3); };
+o_no_create_init : NO_CREATE_INIT { driver.option_str("ms.create_init", "0"); };
 o_estimation_file_tag : ESTIMATION_FILE_TAG EQUAL filename { driver.option_str("ms.estimation_file_tag", $3); };
 o_simulation_file_tag : SIMULATION_FILE_TAG EQUAL filename { driver.option_str("ms.simulation_file_tag", $3); };
 o_coefficients_prior_hyperparameters : COEFFICIENTS_PRIOR_HYPERPARAMETERS EQUAL vec_value
diff --git a/DynareFlex.ll b/DynareFlex.ll
index 48d1f3a6..1594ef53 100644
--- a/DynareFlex.ll
+++ b/DynareFlex.ll
@@ -320,7 +320,7 @@ string eofbuff;
 
 <DYNARE_STATEMENT>output_file_tag {return token::OUTPUT_FILE_TAG;}
 <DYNARE_STATEMENT>file_tag {return token::FILE_TAG;};
-<DYNARE_STATEMENT>initialization_file_tag {return token::INITIALIZATION_FILE_TAG;};
+<DYNARE_STATEMENT>no_create_init {return token::NO_CREATE_INIT;};
 <DYNARE_STATEMENT>estimation_file_tag {return token::ESTIMATION_FILE_TAG;};
 <DYNARE_STATEMENT>simulation_file_tag {return token::SIMULATION_FILE_TAG;};
 <DYNARE_STATEMENT>filtered {return token::FILTERED;}