diff --git a/test/constexpr_tests.hpp b/test/constexpr_tests.hpp
index 9b2e83c..3517488 100644
--- a/test/constexpr_tests.hpp
+++ b/test/constexpr_tests.hpp
@@ -171,8 +171,10 @@ testConstantEvaluation()
 
   a.substr(0);
 
+#ifdef BOOST_STATIC_STRING_HAS_ANY_STRING_VIEW
   // subview
   a.subview(0);
+#endif
 
   // copy
   char k[20]{};
@@ -606,4 +608,4 @@ testConstantEvaluation()
 #endif
 }
 } // static_strings
-} // boost
\ No newline at end of file
+} // boost