diff --git a/pyopencl/tools.py b/pyopencl/tools.py
index a49256dfadc6dac864747228a4695751056300a5..f4a9bdfc4f76670a00e06b4fbbba5b27219dde01 100644
--- a/pyopencl/tools.py
+++ b/pyopencl/tools.py
@@ -44,6 +44,8 @@ register_dtype(np.complex128, "cdouble_t")
 
 
 
+bitlog2 = cl.bitlog2
+
 PooledBuffer = cl.PooledBuffer
 CLAllocator = cl.CLAllocator
 MemoryPool = cl.MemoryPool