diff --git a/matlab/kalman/likelihood/univariate_diffuse_kalman_filter.m b/matlab/kalman/likelihood/univariate_diffuse_kalman_filter.m
index 925b2bbeb71b9a47ab65a06b3885768e3c0bc5ed..e6024a22f57ff78a072bb1487c5cb227ebb619d5 100644
--- a/matlab/kalman/likelihood/univariate_diffuse_kalman_filter.m
+++ b/matlab/kalman/likelihood/univariate_diffuse_kalman_filter.m
@@ -134,7 +134,7 @@ while t < smpl
         Zi = Z(i,:);
         prediction_error = Y(i,t) - Zi*a;
         Fi   = Zi*Pstar*Zi'+H(i);
-        if Fi > crit
+        if Fi > kalman_tol
             Ki     = Pstar*Zi';
             a      = a + Ki*prediction_error/Fi;
             Pstar  = Pstar - Ki*Ki'/Fi;
diff --git a/matlab/kalman/likelihood/univariate_diffuse_kalman_filter_corr.m b/matlab/kalman/likelihood/univariate_diffuse_kalman_filter_corr.m
index 0370b89ca0ee927a020ac6a7ed674b20a7c8a90d..fc588898d5dd6c3b6100bc13b476418a4e2cee8e 100644
--- a/matlab/kalman/likelihood/univariate_diffuse_kalman_filter_corr.m
+++ b/matlab/kalman/likelihood/univariate_diffuse_kalman_filter_corr.m
@@ -183,7 +183,7 @@ while t < smpl
         Zi = ZZ(i,:);
         prediction_error = Y(i,t) - Zi*a;
         Fi   = Zi*Pstar*Zi'+H(i);
-        if Fi > crit
+        if Fi > kalman_tol
             Ki     = Pstar*Zi';
             a      = a + Ki*prediction_error/Fi;
             Pstar  = Pstar - Ki*Ki'/Fi;