diff --git a/src/beast/evolution/likelihood/TreeLikelihood.java b/src/beast/evolution/likelihood/TreeLikelihood.java
index 1aaf64fa1..a6570b6d6 100644
--- a/src/beast/evolution/likelihood/TreeLikelihood.java
+++ b/src/beast/evolution/likelihood/TreeLikelihood.java
@@ -98,11 +98,11 @@ enum Scaling {none, always, _default};
     /**
      * memory allocation for likelihoods for each of the patterns *
      */
-    double[] patternLogLikelihoods;
+    protected double[] patternLogLikelihoods;
     /**
      * memory allocation for the root partials *
      */
-    double[] m_fRootPartials;
+    protected double[] m_fRootPartials;
     /**
      * memory allocation for probability tables obtained from the SiteModel *
      */