diff --git a/release-notes/CREDITS-2.x b/release-notes/CREDITS-2.x
index 4f3e083702..5e964b10b8 100644
--- a/release-notes/CREDITS-2.x
+++ b/release-notes/CREDITS-2.x
@@ -1052,7 +1052,10 @@ João Guerra (joca-bt@github)
   (2.11.1)
  * Reported #3227: Content `null` handling not working for root values
   (2.13.0)
- * Reported #3690: Incorrect target type for arrays when disabling coercion
+ * Reported #3241: `constructorDetector` seems to invalidate `defaultSetterInfo`
+   for nullability
+  (2.18.0)
+* Reported #3690: Incorrect target type for arrays when disabling coercion
   (2.15.0)
  * Reported #3924: Incorrect target type when disabling coercion, trying to deserialize
     String from Array/Object
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index ca85c275ec..6b3c5160bc 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -6,6 +6,9 @@ Project: jackson-databind
 
 2.18.0 (not yet released)
 
+#3241: `constructorDetector` seems to invalidate `defaultSetterInfo`
+  for nullability
+ (reported by @joca-bt)
 #4119: Exception when deserialization uses a record with a constructor
   property with `access=READ_ONLY`
  (reported by @Mochis)
diff --git a/src/test/java/com/fasterxml/jackson/failing/ConstructorDetector3241Test.java b/src/test/java/com/fasterxml/jackson/databind/deser/creators/ConstructorDetector3241Test.java
similarity index 98%
rename from src/test/java/com/fasterxml/jackson/failing/ConstructorDetector3241Test.java
rename to src/test/java/com/fasterxml/jackson/databind/deser/creators/ConstructorDetector3241Test.java
index 60da62cc38..2972c9d4dc 100644
--- a/src/test/java/com/fasterxml/jackson/failing/ConstructorDetector3241Test.java
+++ b/src/test/java/com/fasterxml/jackson/databind/deser/creators/ConstructorDetector3241Test.java
@@ -1,4 +1,4 @@
-package com.fasterxml.jackson.failing;
+package com.fasterxml.jackson.databind.deser.creators;
 
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;