diff --git a/zipline/finance/performance.py b/zipline/finance/performance.py
index 67ad400e..d244b3eb 100644
--- a/zipline/finance/performance.py
+++ b/zipline/finance/performance.py
@@ -110,11 +110,11 @@ omitted).
     | returns       | percentage returns for the entire portfolio over the |
     |               | period                                               |
     +---------------+------------------------------------------------------+
-    | cumulative_   | The net capital used (positive is spent) during      |
-    | capital_used  | the period                                           |
+    | cumulative\   | The net capital used (positive is spent) during      |
+    | _capital_used | the period                                           |
     +---------------+------------------------------------------------------+
-    | max_capital_  | The maximum amount of capital deployed during the    |
-    | used          | period.                                              |
+    | max_capital\  | The maximum amount of capital deployed during the    |
+    | _used         | period.                                              |
     +---------------+------------------------------------------------------+
     | max_leverage  | The maximum leverage used during the period.         |
     +---------------+------------------------------------------------------+
diff --git a/zipline/finance/risk.py b/zipline/finance/risk.py
index 9ceb80aa..51fdb865 100644
--- a/zipline/finance/risk.py
+++ b/zipline/finance/risk.py
@@ -49,6 +49,7 @@ Risk Report
     |                 | and self.end_date.                                 |
     +-----------------+----------------------------------------------------+
 
+
 """
 
 import logbook
@@ -231,7 +232,8 @@ class RiskMetricsBase(object):
         """
 
         .. math::
-            \beta_a = \frac {\mathrm{Cov}(r_a,r_p)}{\mathrm{Var}(r_p)}
+
+            \\beta_a = \\frac{\mathrm{Cov}(r_a,r_p)}{\mathrm{Var}(r_p)}
 
         http://en.wikipedia.org/wiki/Beta_(finance)
         """