diff --git a/src/main/java/org/apache/commons/collections4/bloomfilter/EnhancedDoubleHasher.java b/src/main/java/org/apache/commons/collections4/bloomfilter/EnhancedDoubleHasher.java
index 7b84730db..d4091cdd2 100644
--- a/src/main/java/org/apache/commons/collections4/bloomfilter/EnhancedDoubleHasher.java
+++ b/src/main/java/org/apache/commons/collections4/bloomfilter/EnhancedDoubleHasher.java
@@ -132,7 +132,7 @@ public class EnhancedDoubleHasher implements Hasher {
     /**
      * Performs a modulus calculation on an unsigned long and an integer divisor.
      * @param dividend a unsigned long value to calculate the modulus of.
-     * @param divisor the divisor for the modulus calculation.
+     * @param divisor the divisor for the modulus calculation (must be strictly positive).
      * @return the remainder or modulus value.
      */
     static int mod(final long dividend, final int divisor) {
diff --git a/src/test/java/org/apache/commons/collections4/bloomfilter/AbstractBloomFilterTest.java b/src/test/java/org/apache/commons/collections4/bloomfilter/AbstractBloomFilterTest.java
index 7211779e4..4b5a275e5 100644
--- a/src/test/java/org/apache/commons/collections4/bloomfilter/AbstractBloomFilterTest.java
+++ b/src/test/java/org/apache/commons/collections4/bloomfilter/AbstractBloomFilterTest.java
@@ -247,7 +247,7 @@ public abstract class AbstractBloomFilterTest<T extends BloomFilter> {
     }
 
     /**
-     * Tests that the andCardinality calculations are correct.
+     * Tests that the estimated union calculations are correct.
      */
     @Test
     public final void testEstimateUnion() {