diff --git a/doc/api.rst b/doc/api.rst
index c48dfb0c..ba847ae3 100644
--- a/doc/api.rst
+++ b/doc/api.rst
@@ -81,8 +81,6 @@ formatting of user-defined types that have overloaded ``operator<<``::
 
 .. doxygenfunction:: print(std::ostream&, CStringRef, ArgList)
 
-.. doxygenfunction:: fprintf(std::ostream&, CStringRef, ArgList)
-
 Argument formatters
 -------------------
 
@@ -140,6 +138,8 @@ argument type doesn't match its format specification.
 
 .. doxygenfunction:: fprintf(std::FILE *, CStringRef, ArgList)
 
+.. doxygenfunction:: fprintf(std::ostream&, CStringRef, ArgList)
+
 .. doxygenfunction:: sprintf(CStringRef, ArgList)
 
 .. doxygenclass:: fmt::PrintfFormatter
diff --git a/fmt/ostream.cc b/fmt/ostream.cc
index e1d9acce..2890b4a8 100644
--- a/fmt/ostream.cc
+++ b/fmt/ostream.cc
@@ -8,13 +8,11 @@
  */
 
 #include "fmt/ostream.h"
-#include "fmt/printf.h"
 
 namespace fmt {
 
-namespace {
-// Write the content of w to os.
-void write(std::ostream &os, Writer &w) {
+namespace internal {
+FMT_FUNC void write(std::ostream &os, Writer &w) {
   const char *data = w.data();
   typedef internal::MakeUnsigned<std::streamsize>::Type UnsignedStreamSize;
   UnsignedStreamSize size = w.size();
@@ -32,13 +30,6 @@ void write(std::ostream &os, Writer &w) {
 FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args) {
   MemoryWriter w;
   w.write(format_str, args);
-  write(os, w);
-}
-
-FMT_FUNC int fprintf(std::ostream &os, CStringRef format, ArgList args) {
-  MemoryWriter w;
-  printf(w, format, args);
-  write(os, w);
-  return static_cast<int>(w.size());
+  internal::write(os, w);
 }
 }  // namespace fmt
diff --git a/fmt/ostream.h b/fmt/ostream.h
index 599d8d72..00b7d717 100644
--- a/fmt/ostream.h
+++ b/fmt/ostream.h
@@ -66,6 +66,9 @@ struct ConvertToIntImpl<T, true> {
     value = sizeof(convert(get<DummyStream>() << get<T>())) == sizeof(No)
   };
 };
+
+// Write the content of w to os.
+void write(std::ostream &os, Writer &w);
 }  // namespace internal
 
 // Formats a value.
@@ -94,18 +97,6 @@ void format(BasicFormatter<Char, ArgFormatter> &f,
  */
 FMT_API void print(std::ostream &os, CStringRef format_str, ArgList args);
 FMT_VARIADIC(void, print, std::ostream &, CStringRef)
-
-/**
-  \rst
-  Prints formatted data to the stream *os*.
-
-  **Example**::
-
-    fprintf(cerr, "Don't %s!", "panic");
-  \endrst
- */
-FMT_API int fprintf(std::ostream &os, CStringRef format_str, ArgList args);
-FMT_VARIADIC(int, fprintf, std::ostream &, CStringRef)
 }  // namespace fmt
 
 #ifdef FMT_HEADER_ONLY
diff --git a/fmt/printf.h b/fmt/printf.h
index 080b0023..f0c0b9a2 100644
--- a/fmt/printf.h
+++ b/fmt/printf.h
@@ -13,7 +13,7 @@
 #include <algorithm>  // std::fill_n
 #include <limits>     // std::numeric_limits
 
-#include "fmt/format.h"
+#include "fmt/ostream.h"
 
 namespace fmt {
 namespace internal {
@@ -536,6 +536,23 @@ inline int printf(CStringRef format, ArgList args) {
   return fprintf(stdout, format, args);
 }
 FMT_VARIADIC(int, printf, CStringRef)
+
+/**
+  \rst
+  Prints formatted data to the stream *os*.
+
+  **Example**::
+
+    fprintf(cerr, "Don't %s!", "panic");
+  \endrst
+ */
+inline int fprintf(std::ostream &os, CStringRef format_str, ArgList args) {
+  MemoryWriter w;
+  printf(w, format_str, args);
+  internal::write(os, w);
+  return static_cast<int>(w.size());
+}
+FMT_VARIADIC(int, fprintf, std::ostream &, CStringRef)
 }  // namespace fmt
 
 #endif  // FMT_PRINTF_H_
diff --git a/test/ostream-test.cc b/test/ostream-test.cc
index bbcce95e..4081b43f 100644
--- a/test/ostream-test.cc
+++ b/test/ostream-test.cc
@@ -25,7 +25,7 @@
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "fmt/ostream.cc"
+#include "fmt/ostream.h"
 
 #include <sstream>
 #include "gmock/gmock.h"
@@ -35,13 +35,6 @@
 using fmt::format;
 using fmt::FormatError;
 
-template <typename Char>
-std::basic_ostream<Char> &operator<<(
-    std::basic_ostream<Char> &os, const BasicTestString<Char> &s) {
-  os << s.value();
-  return os;
-}
-
 std::ostream &operator<<(std::ostream &os, const Date &d) {
   os << d.year() << '-' << d.month() << '-' << d.day();
   return os;
@@ -128,22 +121,11 @@ TEST(OStreamTest, Print) {
   EXPECT_EQ("Don't panic!", os.str());
 }
 
-TEST(OStreamTest, PrintfCustom) {
-  EXPECT_EQ("abc", fmt::sprintf("%s", TestString("abc")));
-}
-
-TEST(OStreamTest, FPrintf) {
-  std::ostringstream os;
-  int ret = fmt::fprintf(os, "Don't %s!", "panic");
-  EXPECT_EQ("Don't panic!", os.str());
-  EXPECT_EQ(12, ret);
-}
-
 TEST(OStreamTest, WriteToOStream) {
   std::ostringstream os;
   fmt::MemoryWriter w;
   w << "foo";
-  fmt::write(os, w);
+  fmt::internal::write(os, w);
   EXPECT_EQ("foo", os.str());
 }
 
@@ -188,5 +170,5 @@ TEST(OStreamTest, WriteToOStreamMaxSize) {
     data += n;
     size -= static_cast<std::size_t>(n);
   } while (size != 0);
-  fmt::write(os, w);
+  fmt::internal::write(os, w);
 }
diff --git a/test/printf-test.cc b/test/printf-test.cc
index 2e3f19c7..6bba02e1 100644
--- a/test/printf-test.cc
+++ b/test/printf-test.cc
@@ -479,3 +479,14 @@ TEST(PrintfTest, PrintfError) {
 TEST(PrintfTest, WideString) {
   EXPECT_EQ(L"abc", fmt::sprintf(L"%s", L"abc"));
 }
+
+TEST(PrintfTest, PrintfCustom) {
+  EXPECT_EQ("abc", fmt::sprintf("%s", TestString("abc")));
+}
+
+TEST(PrintfTest, OStream) {
+  std::ostringstream os;
+  int ret = fmt::fprintf(os, "Don't %s!", "panic");
+  EXPECT_EQ("Don't panic!", os.str());
+  EXPECT_EQ(12, ret);
+}
diff --git a/test/util.h b/test/util.h
index 21d76b2d..b7faf62a 100644
--- a/test/util.h
+++ b/test/util.h
@@ -87,6 +87,13 @@ const Char BasicTestString<Char>::EMPTY[] = {0};
 typedef BasicTestString<char> TestString;
 typedef BasicTestString<wchar_t> TestWString;
 
+template <typename Char>
+std::basic_ostream<Char> &operator<<(
+    std::basic_ostream<Char> &os, const BasicTestString<Char> &s) {
+  os << s.value();
+  return os;
+}
+
 class Date {
   int year_, month_, day_;
  public: