diff --git a/jOOQ/src/main/java/org/jooq/impl/CombinedCondition.java b/jOOQ/src/main/java/org/jooq/impl/CombinedCondition.java
index 6b3b8fcf2f..275e283593 100644
--- a/jOOQ/src/main/java/org/jooq/impl/CombinedCondition.java
+++ b/jOOQ/src/main/java/org/jooq/impl/CombinedCondition.java
@@ -66,7 +66,7 @@ class CombinedCondition extends AbstractCondition {
         }
         for (Condition condition : conditions) {
             if (condition == null) {
-                throw new IllegalArgumentException("The argument 'conditions' must contain null");
+                throw new IllegalArgumentException("The argument 'conditions' must not contain null");
             }
         }