diff --git a/client/TracyProfiler.cpp b/client/TracyProfiler.cpp
index e73bf4e2..97b0e3c5 100644
--- a/client/TracyProfiler.cpp
+++ b/client/TracyProfiler.cpp
@@ -1390,7 +1390,8 @@ void Profiler::Worker()
                 {
                     lastBroadcast = t;
                     const auto ts = std::chrono::duration_cast<std::chrono::seconds>( std::chrono::system_clock::now().time_since_epoch() ).count();
-                    broadcastMsg.activeTime = uint32_t( ts - m_epoch );
+                    broadcastMsg.activeTime = int32_t( ts - m_epoch );
+                    assert( broadcastMsg.activeTime >= 0 );
                     m_broadcast->Send( broadcastPort, &broadcastMsg, broadcastLen );
                 }
             }
diff --git a/common/TracyProtocol.hpp b/common/TracyProtocol.hpp
index f706e70c..1a2c7ea5 100644
--- a/common/TracyProtocol.hpp
+++ b/common/TracyProtocol.hpp
@@ -10,7 +10,7 @@ namespace tracy
 constexpr unsigned Lz4CompressBound( unsigned isize ) { return isize + ( isize / 255 ) + 16; }
 
 enum : uint32_t { ProtocolVersion = 40 };
-enum : uint32_t { BroadcastVersion = 1 };
+enum : uint32_t { BroadcastVersion = 2 };
 
 using lz4sz_t = uint32_t;
 
@@ -111,7 +111,7 @@ struct BroadcastMessage
     uint32_t broadcastVersion;
     uint32_t protocolVersion;
     uint32_t listenPort;
-    uint32_t activeTime;        // in seconds
+    int32_t activeTime;        // in seconds
     char programName[WelcomeMessageProgramNameSize];
 };
 
diff --git a/profiler/src/main.cpp b/profiler/src/main.cpp
index 2a3f1343..adee18f9 100644
--- a/profiler/src/main.cpp
+++ b/profiler/src/main.cpp
@@ -106,7 +106,7 @@ struct ClientData
 {
     int64_t time;
     uint32_t protocolVersion;
-    uint32_t activeTime;
+    int32_t activeTime;
     uint32_t port;
     std::string procName;
     std::string address;