diff --git a/docs/units-and-global-variables.rst b/docs/units-and-global-variables.rst
index 8f910c80e..dd9f4a6fb 100644
--- a/docs/units-and-global-variables.rst
+++ b/docs/units-and-global-variables.rst
@@ -48,7 +48,7 @@ namespace and are mainly used to provide information about the blockchain.
 
 
 Block and Transaction Properties
-------------------------------------
+--------------------------------
 
  - ``block.coinbase`` (``address``): current block miner's address
  - ``block.difficulty`` (``uint``): current block difficulty