diff --git a/include/fmt/format-inl.h b/include/fmt/format-inl.h
index 0750e7fc..8d07cc67 100644
--- a/include/fmt/format-inl.h
+++ b/include/fmt/format-inl.h
@@ -1600,14 +1600,21 @@ template <typename F> class fallback_file : public file_base<F> {
   }
 };
 
-template <typename F, FMT_ENABLE_IF(sizeof(F::_p) != 0)>
+#ifndef FMT_USE_FALLBACK_FILE
+#  define FMT_USE_FALLBACK_FILE 1
+#endif
+
+template <typename F,
+          FMT_ENABLE_IF(sizeof(F::_p) != 0 && !FMT_USE_FALLBACK_FILE)>
 auto get_file(F* f, int) -> apple_file<F> {
   return f;
 }
-template <typename F, FMT_ENABLE_IF(sizeof(F::_IO_read_ptr) != 0)>
+template <typename F,
+          FMT_ENABLE_IF(sizeof(F::_IO_read_ptr) != 0 && !FMT_USE_FALLBACK_FILE)>
 inline auto get_file(F* f, int) -> glibc_file<F> {
   return f;
 }
+
 inline auto get_file(FILE* f, ...) -> fallback_file<FILE> { return f; }
 
 using file_ref = decltype(get_file(static_cast<FILE*>(nullptr), 0));
diff --git a/test/scan.h b/test/scan.h
index 15a80356..1f1cda74 100644
--- a/test/scan.h
+++ b/test/scan.h
@@ -153,11 +153,13 @@ class string_scan_buffer final : public scan_buffer {
 
 class file_scan_buffer final : public scan_buffer {
  private:
-  template <typename F, FMT_ENABLE_IF(sizeof(F::_IO_read_ptr) != 0)>
+  template <typename F, FMT_ENABLE_IF(sizeof(F::_IO_read_ptr) != 0 &&
+                                      !FMT_USE_FALLBACK_FILE)>
   static auto get_file(F* f, int) -> glibc_file<F> {
     return f;
   }
-  template <typename F, FMT_ENABLE_IF(sizeof(F::_p) != 0)>
+  template <typename F,
+            FMT_ENABLE_IF(sizeof(F::_p) != 0 && !FMT_USE_FALLBACK_FILE)>
   static auto get_file(F* f, int) -> apple_file<F> {
     return f;
   }