diff --git a/core/src/main/java/org/springframework/ldap/support/LdapUtils.java b/core/src/main/java/org/springframework/ldap/support/LdapUtils.java
index 502fca88..9c38f1ee 100644
--- a/core/src/main/java/org/springframework/ldap/support/LdapUtils.java
+++ b/core/src/main/java/org/springframework/ldap/support/LdapUtils.java
@@ -450,7 +450,7 @@ public final class LdapUtils {
 	 */
 	public static LdapName prepend(Name dn, Name pathToPrepend) {
 		Assert.notNull(dn, "dn must not be null");
-		Assert.notNull(pathToPrepend, "pathToRemove must not be null");
+		Assert.notNull(pathToPrepend, "pathToPrepend must not be null");
 
 		LdapName result = newLdapName(dn);
 		try {