diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index a2635303..e0487c6f 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -2,5 +2,5 @@ add_custom_command(OUTPUT html/index.html
   COMMAND doxygen
   COMMAND rm -rf html
   COMMAND ../sphinx/sphinx-build.py -b html . html
-  DEPENDS Doxyfile conf.py index.rst _templates/layout.html)
+  DEPENDS ../format.h Doxyfile conf.py index.rst _templates/layout.html)
 add_custom_target(doc DEPENDS html/index.html)
diff --git a/doc/index.rst b/doc/index.rst
index 19cbb2f7..2886cf71 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -41,7 +41,7 @@ Write API
 
 .. doxygenfunction:: fmt::hexu
 
-.. doxygenfunction:: fmt::pad
+.. doxygenfunction:: fmt::pad(int, unsigned, Char)
 
 .. _formatstrings:
 
diff --git a/format.h b/format.h
index febecdc9..dc3af848 100644
--- a/format.h
+++ b/format.h
@@ -665,8 +665,9 @@ IntFormatSpec<int, TypeSpec<'X'> > hexu(int value);
 
   **Example**::
 
-    std::string s = str(Writer() << pad(hex(0xcafe), 8, '0'));
-    // s == "0000cafe"
+    Writer out;
+    out << pad(hex(0xcafe), 8, '0');
+    // out.str() == "0000cafe"
 
   \endrst
  */