diff --git a/filterpy/changelog.txt b/filterpy/changelog.txt
index 3fbdf92..28a85d2 100644
--- a/filterpy/changelog.txt
+++ b/filterpy/changelog.txt
@@ -1,3 +1,10 @@
+Version 0.1.5
+=============
+
+* Fix #53: UKF rts_smoother does not use residual functions
+* Fixed #54: Comments in multivariate_multiply incorrectly called the
+  covariance the mean. 
+
 Version 0.1.4
 =============
 
diff --git a/filterpy/stats/stats.py b/filterpy/stats/stats.py
index 689a455..e06aab4 100644
--- a/filterpy/stats/stats.py
+++ b/filterpy/stats/stats.py
@@ -188,7 +188,7 @@ def multivariate_multiply(m1, c1, m2, c2):
         are all valid.
 
     c1 : matrix-like
-        Mean of first Gaussian. Must be convertable to an 2D array via
+        Covariance of first Gaussian. Must be convertable to an 2D array via
         numpy.asarray().
 
      m2 : array-like
@@ -197,7 +197,7 @@ def multivariate_multiply(m1, c1, m2, c2):
         are all valid.
 
     c2 : matrix-like
-        Mean of second Gaussian. Must be convertable to an 2D array via
+        Covariance of second Gaussian. Must be convertable to an 2D array via
         numpy.asarray().
 
     Returns