diff --git a/fmt/format.h b/fmt/format.h
index b0b1bc81..533678ea 100644
--- a/fmt/format.h
+++ b/fmt/format.h
@@ -1154,7 +1154,7 @@ inline fmt::StringRef thousands_sep(...) { return ""; }
 #endif
 
 template <typename Formatter, typename Char, typename T>
-void format_arg(Formatter &, const Char *, const T &) {
+void format_value(Formatter &, const Char *, const T &) {
   FMT_STATIC_ASSERT(False<T>::value,
                     "Cannot format argument. To enable the use of ostream "
                     "operator<< include fmt/ostream.h. Otherwise provide "
@@ -1266,9 +1266,9 @@ class MakeValue : public Arg {
   template <typename T>
   static void format_custom_arg(
       void *formatter, const void *arg, void *format_str_ptr) {
-    format_arg(*static_cast<Formatter*>(formatter),
-               *static_cast<const Char**>(format_str_ptr),
-               *static_cast<const T*>(arg));
+    format_value(*static_cast<Formatter*>(formatter),
+                 *static_cast<const Char**>(format_str_ptr),
+                 *static_cast<const T*>(arg));
   }
 
  public:
diff --git a/fmt/ostream.h b/fmt/ostream.h
index 259bc3e1..87b80471 100644
--- a/fmt/ostream.h
+++ b/fmt/ostream.h
@@ -73,7 +73,7 @@ void write(std::ostream &os, Writer &w);
 
 // Formats a value.
 template <typename Char, typename ArgFormatter, typename T>
-void format_arg(BasicFormatter<Char, ArgFormatter> &f,
+void format_value(BasicFormatter<Char, ArgFormatter> &f,
                 const Char *&format_str, const T &value) {
   internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE> buffer;
 
diff --git a/fmt/time.h b/fmt/time.h
index 83f742c4..675ff0da 100644
--- a/fmt/time.h
+++ b/fmt/time.h
@@ -15,7 +15,7 @@
 
 namespace fmt {
 template <typename ArgFormatter>
-void format_arg(BasicFormatter<char, ArgFormatter> &f,
+void format_value(BasicFormatter<char, ArgFormatter> &f,
                 const char *&format_str, const std::tm &tm) {
   if (*format_str == ':')
     ++format_str;
diff --git a/test/format-test.cc b/test/format-test.cc
index 8a8df1a5..022b1aa7 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -1355,7 +1355,7 @@ TEST(FormatterTest, FormatCStringRef) {
   EXPECT_EQ("test", format("{0}", CStringRef("test")));
 }
 
-void format_arg(fmt::BasicFormatter<char> &f, const char *, const Date &d) {
+void format_value(fmt::BasicFormatter<char> &f, const char *, const Date &d) {
   f.writer() << d.year() << '-' << d.month() << '-' << d.day();
 }
 
@@ -1368,7 +1368,7 @@ TEST(FormatterTest, FormatCustom) {
 class Answer {};
 
 template <typename Char>
-void format_arg(fmt::BasicFormatter<Char> &f, const Char *, Answer) {
+void format_value(fmt::BasicFormatter<Char> &f, const Char *, Answer) {
   f.writer() << "42";
 }
 
diff --git a/test/util-test.cc b/test/util-test.cc
index 6c1a2c0d..5d5ddf32 100644
--- a/test/util-test.cc
+++ b/test/util-test.cc
@@ -64,7 +64,7 @@ namespace {
 struct Test {};
 
 template <typename Char>
-void format_arg(fmt::BasicFormatter<Char> &f, const Char *, Test) {
+void format_value(fmt::BasicFormatter<Char> &f, const Char *, Test) {
   f.writer() << "test";
 }
 
@@ -581,7 +581,7 @@ struct CustomFormatter {
   typedef char Char;
 };
 
-void format_arg(CustomFormatter &, const char *&s, const Test &) {
+void format_value(CustomFormatter &, const char *&s, const Test &) {
   s = "custom_format";
 }