diff --git a/libcxx/test/std/containers/views/span.sub/subspan.pass.cpp b/libcxx/test/std/containers/views/span.sub/subspan.pass.cpp
--- a/libcxx/test/std/containers/views/span.sub/subspan.pass.cpp
+++ b/libcxx/test/std/containers/views/span.sub/subspan.pass.cpp
@@ -37,13 +37,7 @@
     using S2 = decltype(s2);
     ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
     ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
-    if constexpr (Count != std::dynamic_extent) {
-        static_assert(S1::extent == Count);
-    } else if constexpr (Span::extent != std::dynamic_extent) {
-        static_assert(S1::extent == Span::extent - Offset);
-    } else {
-        static_assert(S1::extent == std::dynamic_extent);
-    }
+    static_assert(S1::extent == Count);
     static_assert(S2::extent == std::dynamic_extent, "");
     return
         s1.data() == s2.data()
@@ -82,13 +76,7 @@
     using S2 = decltype(s2);
     ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
     ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
-    if constexpr (Count != std::dynamic_extent) {
-        static_assert(S1::extent == Count);
-    } else if constexpr (Span::extent != std::dynamic_extent) {
-        static_assert(S1::extent == Span::extent - Offset);
-    } else {
-        static_assert(S1::extent == std::dynamic_extent);
-    }
+    static_assert(S1::extent == Count);
     static_assert(S2::extent == std::dynamic_extent, "");
     assert(s1.data() == s2.data());
     assert(s1.size() == s2.size());