diff --git a/tests/kalman_filter_smoother/algo4a.mod b/tests/kalman_filter_smoother/algo4a.mod
index 37d743bbb..9ca467501 100644
--- a/tests/kalman_filter_smoother/algo4a.mod
+++ b/tests/kalman_filter_smoother/algo4a.mod
@@ -33,7 +33,7 @@ end;
 
 varobs dw dx y z;
        
-estimation(datafile=data,first_obs=1000,nobs=200,mh_replic=0,diffuse_filter,smoothed_state_uncertainty);
+estimation(datafile=data,first_obs=1000,nobs=200,mh_replic=0,diffuse_filter);
 //estimation(datafile=data,first_obs=1000,nobs=200,mh_replic=0,mode_compute=0,mode_file=algo3_mode,diffuse_filter);
 
 //checking smoother consistency