diff --git a/test/TFormulaParsingTests.h b/test/TFormulaParsingTests.h
index ca385b31d480c31c339fda1e35d3b3dbde89819a..6f28616fcbb5225e9ebb3c5f08e54e1020f6e507 100644
--- a/test/TFormulaParsingTests.h
+++ b/test/TFormulaParsingTests.h
@@ -601,13 +601,15 @@ bool test35() {
    g1.SetParameters(par.data()); 
 
    ok &=  TMath::AreEqualRel( f1.Eval(2), g1.Eval(2), 1.E-6);
+   if (!ok) std::cout << "Error in test35 - f1 != g1 " << f1.Eval(2) << "  " << g1.Eval(2) << std::endl;
    
    TF1 f2("f2","cheb10(0)+cheb1(11)",-1,1);
    TF1 g2("g2",[](double *x, double *p){ return ROOT::Math::ChebyshevN(10, x[0], p ) + ROOT::Math::ChebyshevN(1,x[0],p+11 ); }, -1, 1, 13);
    f2.SetParameters(par.data()); 
    g2.SetParameters(par.data()); 
 
-   ok &=  TMath::AreEqualRel( f2.Eval(2), g2.Eval(2), 1.E-6);   
+   ok &=  TMath::AreEqualRel( f2.Eval(2), g2.Eval(2), 1.E-6);
+   if (!ok) {std::cout << "Error in test35 - f2 != g2 " << f2.Eval(2.) << "  " << g2.Eval(2.) << std::endl;
    
    return ok; 
 }