diff --git a/src/net_processing.h b/src/net_processing.h
index 5f45fb1442a..ccacd15e422 100644
--- a/src/net_processing.h
+++ b/src/net_processing.h
@@ -74,7 +74,8 @@ public:
         //! Whether or not the internal RNG behaves deterministically (this is
         //! a test-only option).
         bool deterministic_rng{false};
-        //! Number of headers sent in one getheaders message result.
+        //! Number of headers sent in one getheaders message result (this is
+        //! a test-only option).
         uint32_t max_headers_result{MAX_HEADERS_RESULTS};
     };