diff --git a/src/main/java/com/fasterxml/jackson/databind/deser/DeserializerCache.java b/src/main/java/com/fasterxml/jackson/databind/deser/DeserializerCache.java
index 0282af7213..d3591af73d 100644
--- a/src/main/java/com/fasterxml/jackson/databind/deser/DeserializerCache.java
+++ b/src/main/java/com/fasterxml/jackson/databind/deser/DeserializerCache.java
@@ -56,6 +56,9 @@ public final class DeserializerCache
 
     /**
      * We hold an explicit lock while creating deserializers to avoid creating duplicates.
+     * Guards {@link #_incompleteDeserializers}.
+     *
+     * @since 2.17
      */
     private final ReentrantLock _incompleteDeserializersLock = new ReentrantLock();
 
@@ -169,10 +172,9 @@ public JsonDeserializer<Object> findValueDeserializer(DeserializationContext ctx
             // If not, need to request factory to construct (or recycle)
             deser = _createAndCacheValueDeserializer(ctxt, factory, propertyType);
             if (deser == null) {
-                /* Should we let caller handle it? Let's have a helper method
-                 * decide it; can throw an exception, or return a valid
-                 * deserializer
-                 */
+                // Should we let caller handle it? Let's have a helper method
+                // decide it; can throw an exception, or return a valid
+                // deserializer
                 deser = _handleUnknownValueDeserializer(ctxt, propertyType);
             }
         }
@@ -211,9 +213,8 @@ public boolean hasValueDeserializerFor(DeserializationContext ctxt,
             DeserializerFactory factory, JavaType type)
         throws JsonMappingException
     {
-        /* Note: mostly copied from findValueDeserializer, except for
-         * handling of unknown types
-         */
+        // Note: mostly copied from findValueDeserializer, except for
+        // handling of unknown types
         JsonDeserializer<Object> deser = _findCachedDeserializer(type);
         if (deser == null) {
             deser = _createAndCacheValueDeserializer(ctxt, factory, type);
@@ -249,10 +250,9 @@ protected JsonDeserializer<Object> _createAndCacheValueDeserializer(Deserializat
             DeserializerFactory factory, JavaType type)
         throws JsonMappingException
     {
-        /* Only one thread to construct deserializers at any given point in time;
-         * limitations necessary to ensure that only completely initialized ones
-         * are visible and used.
-         */
+        // Only one thread to construct deserializers at any given point in time;
+        // limitations necessary to ensure that only completely initialized ones
+        // are visible and used.
         _incompleteDeserializersLock.lock();
         try {
             // Ok, then: could it be that due to a race condition, deserializer can now be found?