diff --git a/src/main/java/org/apache/commons/math/genetics/GeneticAlgorithm.java b/src/main/java/org/apache/commons/math/genetics/GeneticAlgorithm.java
index 081fe9e90..3d81ba360 100644
--- a/src/main/java/org/apache/commons/math/genetics/GeneticAlgorithm.java
+++ b/src/main/java/org/apache/commons/math/genetics/GeneticAlgorithm.java
@@ -34,6 +34,7 @@ public class GeneticAlgorithm {
      * Use {@link #setRandomGenerator(RandomGenerator)} to supply an alternative
      * to the default JDK-provided PRNG.
      */
+    //@GuardedBy("this")
     private static RandomGenerator randomGenerator = new JDKRandomGenerator();
 
     /** the crossover policy used by the algorithm. */