diff --git a/include/fmt/core.h b/include/fmt/core.h
index 0d5b9c2c..f7a5da68 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -619,8 +619,8 @@ FMT_MAKE_VALUE(pointer_type, std::nullptr_t, const void*)
 // pointer cast it to "void *" or "const void *". In particular, this forbids
 // formatting of "[const] volatile char *" which is printed as bool by
 // iostreams.
-template <typename T>
-void make_value(const T *) {
+template <typename C, typename T>
+typed_value<C, pointer_type> make_value(const T *) {
   static_assert(!sizeof(T), "formatting of non-void pointers is disallowed");
 }
 
diff --git a/test/compile-test/CMakeLists.txt b/test/compile-test/CMakeLists.txt
index ede0c3ce..38038ede 100644
--- a/test/compile-test/CMakeLists.txt
+++ b/test/compile-test/CMakeLists.txt
@@ -10,6 +10,7 @@ function (generate_source result fragment)
   set(${result} "
   #define FMT_HEADER_ONLY 1
   #include \"fmt/posix.h\"
+  #include \"fmt/ostream.h\"
   int main() {
     ${fragment}
   }
@@ -53,6 +54,10 @@ expect_compile_error("fmt::format(\"{}\", L'a');")
 # Formatting a wide string with a narrow format string is forbidden.
 expect_compile_error("fmt::format(\"{}\", L\"foo\");")
 
+# Formatting a narrow string with a wide format string is forbidden because
+# mixing UTF-8 with UTF-16/32 can result in an invalid output.
+expect_compile_error("fmt::format(L\"{}\", \"foo\");")
+
 # Make sure that compiler features detected in the header
 # match the features detected in CMake.
 if (SUPPORTS_USER_DEFINED_LITERALS)