diff --git a/test/main.h b/test/main.h
index dd46c0047..8eead7cd7 100644
--- a/test/main.h
+++ b/test/main.h
@@ -424,7 +424,9 @@ template<> inline long double test_precision<std::complex<long double> >() { ret
 
 #define EIGEN_TEST_SCALAR_TEST_OVERLOAD(TYPE)                             \
   inline bool test_isApprox(TYPE a, TYPE b)                               \
-  { return internal::isApprox(a, b, test_precision<TYPE>()); }            \
+  { return numext::equal_strict(a, b) ||                                  \
+      ((numext::isnan)(a) && (numext::isnan)(b)) ||                       \
+      (internal::isApprox(a, b, test_precision<TYPE>())); }               \
   inline bool test_isCwiseApprox(TYPE a, TYPE b, bool exact)              \
   { return numext::equal_strict(a, b) ||                                  \
       ((numext::isnan)(a) && (numext::isnan)(b)) ||                       \