diff --git a/include/zenoh-pico/protocol/definitions/message.h b/include/zenoh-pico/protocol/definitions/message.h
index cf9326103..eea54a70e 100644
--- a/include/zenoh-pico/protocol/definitions/message.h
+++ b/include/zenoh-pico/protocol/definitions/message.h
@@ -45,7 +45,7 @@
 #define _Z_FLAG_Z_T 0x20  // 1 << 5 | QueryTarget       if T==1 then the query target is present
 #define _Z_FLAG_Z_X 0x00  // Unused flags are set to zero
 
-#define _Z_FRAG_BUFF_BASE_SIZE 128  // Base size of the buffer to encode a fragment message header
+#define _Z_FRAG_BUFF_BASE_SIZE 128  // Arbitrary base size of the buffer to encode a fragment message header
 
 // Flags:
 // - T: Timestamp      If T==1 then the timestamp if present