diff --git a/pyopencl/clrandom.py b/pyopencl/clrandom.py
index 43baca7ae941276fec622d9dac57380a7e1ccce5..04d3a59a50fc7b02f0b3cc6beae26b3ce4ea73c5 100644
--- a/pyopencl/clrandom.py
+++ b/pyopencl/clrandom.py
@@ -25,7 +25,7 @@ THE SOFTWARE.
 
 # {{{ documentation
 
-__doc__ = """
+__doc__ = u"""
 PyOpenCL now includes and uses the `RANLUXCL random number generator
 <https://bitbucket.org/ivarun/ranluxcl/>`_ by Ivar Ursin Nikolaisen.  In
 addition to being usable through the convenience functions above, it is