diff --git a/matlab/identification_checks.m b/matlab/identification_checks.m
index 8ccbc2f795579528b1d92a2d97864ef0818598b3..be54d1be115251a1dbe79eebd9f618431babf1e9 100644
--- a/matlab/identification_checks.m
+++ b/matlab/identification_checks.m
@@ -170,7 +170,7 @@ end
 jweak      = zeros(1,param_nbr);
 jweak_pair = zeros(param_nbr,param_nbr);
 
-if test_flag ~= 0 || test_flag ~= 0
+if test_flag ~= 0
     % these tests only apply to Jacobians, not to Gram matrices, i.e. Hessian-type or 'covariance' matrices
     Pco = NaN(param_nbr,param_nbr);
     for ii = 1:size(Xparnonzero,2)