diff --git a/include/gsl.h b/include/gsl.h
index e20ac69..bcaf57a 100644
--- a/include/gsl.h
+++ b/include/gsl.h
@@ -219,7 +219,7 @@ namespace std
 #pragma warning(pop)
 
 #ifndef GSL_THROWS_FOR_TESTING
-#pragma undef noexcept
+#undef noexcept
 #endif // GSL_THROWS_FOR_TESTING
 
 #endif // _MSC_VER <= 1800
diff --git a/include/span.h b/include/span.h
index 6882f40..a8d0542 100644
--- a/include/span.h
+++ b/include/span.h
@@ -2054,7 +2054,7 @@ general_span_iterator<Span> operator+(typename general_span_iterator<Span>::diff
 #pragma warning(pop)
 
 #ifndef GSL_THROWS_FOR_TESTING
-#pragma undef noexcept
+#undef noexcept
 #pragma pop_macro("noexcept")
 #endif // GSL_THROWS_FOR_TESTING