diff --git a/doc/usage.rst b/doc/usage.rst
index 7dce0ffb..435afd53 100644
--- a/doc/usage.rst
+++ b/doc/usage.rst
@@ -53,8 +53,9 @@ To build a `shared library`__ set the ``BUILD_SHARED_LIBS`` CMake variable to
 __ http://en.wikipedia.org/wiki/Library_%28computing%29#Shared_libraries
 
 
-To build a `static library` with position independent code (required if the main consumer of the fmt library is a shared library i.e. a Python extension) set the ``CMAKE_POSITION_INDEPENDENT_CODE`` CMake variable to
-``TRUE``::
+To build a `static library` with position independent code (required if the main
+consumer of the fmt library is a shared library i.e. a Python extension) set the
+``CMAKE_POSITION_INDEPENDENT_CODE`` CMake variable to ``TRUE``::
 
   cmake -DCMAKE_POSITION_INDEPENDENT_CODE=TRUE ...