diff --git a/src/dr/evomodel/substmodel/LogAdditiveCtmcRateProvider.java b/src/dr/evomodel/substmodel/LogAdditiveCtmcRateProvider.java
index 194f2a71f4..652ec7d3f4 100644
--- a/src/dr/evomodel/substmodel/LogAdditiveCtmcRateProvider.java
+++ b/src/dr/evomodel/substmodel/LogAdditiveCtmcRateProvider.java
@@ -9,4 +9,12 @@ public interface LogAdditiveCtmcRateProvider extends Model, Likelihood {
     double[] getXBeta();
 
     LogColumn[] getColumns();
+
+    default double[] getRates() {
+        double[] rates = getXBeta();
+        for (int i = 0; i < rates.length; ++i) {
+            rates[i] = Math.exp(rates[i]);
+        }
+        return rates;
+    }
 }