diff --git a/test/FirstDerivative/BasicArithmeticMulDiv.C b/test/FirstDerivative/BasicArithmeticMulDiv.C
index 1362708c3..b02506b36 100644
--- a/test/FirstDerivative/BasicArithmeticMulDiv.C
+++ b/test/FirstDerivative/BasicArithmeticMulDiv.C
@@ -2,7 +2,6 @@
 // RUN: ./BasicArithmeticMulDiv.out | FileCheck -check-prefix=CHECK-EXEC %s
 
 //CHECK-NOT: {{.*error|warning|note:.*}}
-// XFAIL: target={{i586.*}}
 
 #include "clad/Differentiator/Differentiator.h"
 
@@ -116,9 +115,9 @@ double m_11(double x) {
 // CHECK-NEXT:   double _d_x = 1;
 // CHECK-NEXT:   const size_t _d_maxN = 0;
 // CHECK-NEXT:   const size_t maxN = 53;
-// CHECK-NEXT:   bool _t0 = maxN < 64UL;
-// CHECK-NEXT:   const size_t _d_m = _t0 ? _d_maxN : 0UL;
-// CHECK-NEXT:   const size_t m = _t0 ? maxN : 64UL;
+// CHECK-NEXT:   bool _t0 = maxN < {{64U|64UL}};
+// CHECK-NEXT:   const size_t _d_m = _t0 ? _d_maxN : {{0U|0UL}};
+// CHECK-NEXT:   const size_t m = _t0 ? maxN : {{64U|64UL}};
 // CHECK-NEXT:   return _d_x * m + x * _d_m;
 // CHECK-NEXT: }