diff --git a/src/main/java/com/fasterxml/jackson/annotation/JsonTypeInfo.java b/src/main/java/com/fasterxml/jackson/annotation/JsonTypeInfo.java
index e1a11f37..159028ab 100644
--- a/src/main/java/com/fasterxml/jackson/annotation/JsonTypeInfo.java
+++ b/src/main/java/com/fasterxml/jackson/annotation/JsonTypeInfo.java
@@ -460,8 +460,14 @@ public String toString() {
 
         @Override
         public int hashCode() {
-            return Objects.hash(_idType, _inclusionType, _propertyName, _defaultImpl, _requireTypeIdForSubtypes)
-                + (_idVisible ? 11 : -17);
+            int hashCode = 1;
+            hashCode = 31 * hashCode + (_idType != null ? _idType.hashCode() : 0);
+            hashCode = 31 * hashCode + (_inclusionType != null ? _inclusionType.hashCode() : 0);
+            hashCode = 31 * hashCode + (_propertyName != null ? _propertyName.hashCode() : 0);
+            hashCode = 31 * hashCode + (_defaultImpl != null ? _defaultImpl.hashCode() : 0);
+            hashCode = 31 * hashCode + (_requireTypeIdForSubtypes ? 11 : -17);
+            hashCode = 31 * hashCode + (_idVisible ? 11 : -17);
+            return hashCode;
         }
 
         @Override
@@ -478,9 +484,20 @@ private static boolean _equals(Value a, Value b)
                     && (a._inclusionType == b._inclusionType)
                     && (a._defaultImpl == b._defaultImpl)
                     && (a._idVisible == b._idVisible)
-                    && Objects.equals(a._propertyName, b._propertyName)
-                    && Objects.equals(a._requireTypeIdForSubtypes, b._requireTypeIdForSubtypes)
+                    && _equal(a._propertyName, b._propertyName)
+                    && _equal(a._requireTypeIdForSubtypes, b._requireTypeIdForSubtypes)
             ;
         }
+
+        private static <T> boolean _equal(T value1, T value2)
+        {
+            if (value1 == null) {
+                return (value2 == null);
+            }
+            if (value2 == null) {
+                return false;
+            }
+            return value1.equals(value2);
+        }
     }
 }