diff --git a/cppad.spec b/cppad.spec
index 1f2db83..552e008 100644
--- a/cppad.spec
+++ b/cppad.spec
@@ -118,20 +118,23 @@ cat temp.out
 # Patch to fix example/utility/to_string.cpp
 # This will no longer be necessary once the upstread source > 20220000.1
 cat << EOF > to_string.patch
-26a27,38
->     template <class Type>
->     void print_error(
->         const char* routine_name,
->         const char* value_name,
->         Type value,
->         Type check,
->         Type eps = Type(0) )
->     {   std::cout << routine_name << " error : ";
->         std::cout << value_name << " - check = " << value - check;
->         std::cout << ", eps = " << eps << "\n";
->         return;
+2c2
+26a27,40
+>     template <class Float>
+>     Float epsilon(void)
+>     {   size_t digits = size_t( std::numeric_limits<Float>::digits );
+>         Float radix  = Float( std::numeric_limits<Float>::radix );
+>         Float result = Float(1);
+>         for(size_t i = 1; i < digits; ++i)
+>             result = result / radix;
+>         /*
+>         std::cout << "epsilon function = " << result;
+>         std::cout << ", limit = " << std::numeric_limits<Float>::epsilon();
+>         std::cout << "\n";
+>         */
+>         return result;
 >     }
-32,36c44,51
+32,36c46,53
 <             ++index;
 <         while( index < s.size() )
 <             result = Integer( 10 * result + (s[index++] - '0') );
@@ -146,30 +149,14 @@ cat << EOF > to_string.patch
 >         {   while( index < s.size() )
 >                 result = Integer(10) * result + Integer(s[index++] - '0' );
 >         }
-54a70,71
->         if( max != check )
->             print_error("signed_integer", "max", max, check);
-59a77,78
->         if( min != check )
->             print_error("signed_integer", "min", min, check);
-70a90,91
->         if( max != check )
->             print_error("unsigned_integer", "max", max, check);
-71a93,94
->         if( std::numeric_limits<Integer>::min() != 0 )
->             std::cout << "unsigned_integer: min != 0\n";
-83a107,111
->         if( ! ok )
->         {   std::cout << "check / pi - 1.0 = " << check / pi - 1.0;
->             std::cout << ", eps = " << eps << "\n";
->             print_error("floating", "pi", pi, check, eps);
->         }
-100a129,133
->         if( ! ok )
->         {   std::cout << "check / pi - 1.0 = " << check /pi - Base(1.0);
->             std::cout << ", eps = " << eps << "\n";
->             print_error("ad_floating", "pi", pi, check, eps);
->         }
+78c95
+<         Float eps = std::numeric_limits<Float>::epsilon();
+---
+>         Float eps = epsilon<Float>();
+95c112
+<         Base eps  = std::numeric_limits<Base>::epsilon();
+---
+>         Base eps  = epsilon<Base>();
 EOF
 patch CppAD-%{version}/example/utility/to_string.cpp to_string.patch
 # -----------------------------------------------------------------------------