diff --git a/app/03app_node/main.c b/app/03app_node/main.c
index f9ed72f..f40d19e 100644
--- a/app/03app_node/main.c
+++ b/app/03app_node/main.c
@@ -35,9 +35,9 @@
 
 typedef enum {
     PAYLOAD_TYPE_APPLICATION      = 1,
-    PAYLOAD_TYPE_METRICS_REQUEST  = 128,
-    PAYLOAD_TYPE_METRICS_RESPONSE = 129,
-    PAYLOAD_TYPE_METRICS_LOAD     = 130,
+    PAYLOAD_TYPE_METRICS_REQUEST  = 0x90,
+    PAYLOAD_TYPE_METRICS_RESPONSE = 0x91,
+    PAYLOAD_TYPE_METRICS_LOAD     = 0x92,
 } default_payload_type_t;
 
 typedef struct __attribute__((packed)) {
diff --git a/mari/models.h b/mari/models.h
index a657748..184f82c 100644
--- a/mari/models.h
+++ b/mari/models.h
@@ -195,7 +195,7 @@ typedef struct __attribute__((packed)) {
 // -------- types used for metrics collection --------
 
 typedef enum {
-    MARI_PAYLOAD_TYPE_METRICS_PROBE = 140,
+    MARI_PAYLOAD_TYPE_METRICS_PROBE = 0x9C,
 } mr_metrics_payload_type_t;
 
 typedef struct __attribute__((packed)) {