diff --git a/independent-projects/resteasy-reactive/server/runtime/src/main/java/org/jboss/resteasy/reactive/server/handlers/RequestDeserializeHandler.java b/independent-projects/resteasy-reactive/server/runtime/src/main/java/org/jboss/resteasy/reactive/server/handlers/RequestDeserializeHandler.java
index e6b3a0b7379e0..88bd9824402c5 100644
--- a/independent-projects/resteasy-reactive/server/runtime/src/main/java/org/jboss/resteasy/reactive/server/handlers/RequestDeserializeHandler.java
+++ b/independent-projects/resteasy-reactive/server/runtime/src/main/java/org/jboss/resteasy/reactive/server/handlers/RequestDeserializeHandler.java
@@ -54,6 +54,7 @@ public void handle(ResteasyReactiveRequestContext requestContext) throws Excepti
             try {
                 effectiveRequestType = MediaType.valueOf((String) requestType);
             } catch (Exception e) {
+                log.debugv("Incorrect media type", e);
                 throw new WebApplicationException(Response.status(Response.Status.BAD_REQUEST).build());
             }
 
@@ -70,6 +71,7 @@ public void handle(ResteasyReactiveRequestContext requestContext) throws Excepti
         }
         List<MessageBodyReader<?>> readers = serialisers.findReaders(null, type, effectiveRequestType, RuntimeType.SERVER);
         if (readers.isEmpty()) {
+            log.debugv("No matching MessageBodyReader found for type {0} and media type {1}", type, effectiveRequestType);
             throw new NotSupportedException();
         }
         for (MessageBodyReader<?> reader : readers) {
@@ -102,6 +104,7 @@ public void handle(ResteasyReactiveRequestContext requestContext) throws Excepti
                 return;
             }
         }
+        log.debugv("No matching MessageBodyReader found for type {0} and media type {1}", type, effectiveRequestType);
         throw new NotSupportedException("No supported MessageBodyReader found");
     }