2 files changed, 4 insertions, 3 deletions
diff --git a/src/libutil/logging.cc b/src/libutil/logging.cc
index 1a2684a43a5e..011155871122 100644
--- a/src/libutil/logging.cc
+++ b/src/libutil/logging.cc
@@ -176,7 +176,7 @@ static Logger::Fields getFields(nlohmann::json & json)
 }
 
 bool handleJSONLogMessage(const std::string & msg,
-    const Activity & act, std::map<ActivityId, Activity> & activities)
+    const Activity & act, std::map<ActivityId, Activity> & activities, bool trusted)
 {
     if (!hasPrefix(msg, "@nix ")) return false;
 
@@ -187,7 +187,7 @@ bool handleJSONLogMessage(const std::string & msg,
 
         if (action == "start") {
             auto type = (ActivityType) json["type"];
-            if (type == actDownload || type == actUnknown)
+            if (trusted || type == actDownload)
                 activities.emplace(std::piecewise_construct,
                     std::forward_as_tuple(json["id"]),
                     std::forward_as_tuple(*logger, (Verbosity) json["level"], type,
diff --git a/src/libutil/logging.hh b/src/libutil/logging.hh
index 70a9f5d86249..677aa4daec4d 100644
--- a/src/libutil/logging.hh
+++ b/src/libutil/logging.hh
@@ -133,7 +133,8 @@ Logger * makeDefaultLogger();
 Logger * makeJSONLogger(Logger & prevLogger);
 
 bool handleJSONLogMessage(const std::string & msg,
-    const Activity & act, std::map<ActivityId, Activity> & activities);
+    const Activity & act, std::map<ActivityId, Activity> & activities,
+    bool trusted);
 
 extern Verbosity verbosity; /* suppress msgs > this */