diff --git a/code/nel/include/nel/misc/common.h b/code/nel/include/nel/misc/common.h
index f72a4dd3b..4f5bacb75 100644
--- a/code/nel/include/nel/misc/common.h
+++ b/code/nel/include/nel/misc/common.h
@@ -298,7 +298,7 @@ void nlSleep( uint32 ms );
 #endif
 
 /// Returns Thread Id (note: on Linux, Process Id is the same as the Thread Id)
-uint getThreadId();
+size_t getThreadId();
 
 /// Returns a readable string from a vector of bytes. unprintable char are replaced by '?'
 std::string stringFromVector( const std::vector<uint8>& v, bool limited = true );
diff --git a/code/nel/src/misc/common.cpp b/code/nel/src/misc/common.cpp
index 55b50a219..f51ac4c71 100644
--- a/code/nel/src/misc/common.cpp
+++ b/code/nel/src/misc/common.cpp
@@ -107,12 +107,12 @@ void nlSleep( uint32 ms )
 /*
  * Returns Thread Id (note: on Linux, Process Id is the same as the Thread Id)
  */
-uint getThreadId()
+size_t getThreadId()
 {
 #ifdef NL_OS_WINDOWS
 	return GetCurrentThreadId();
 #elif defined NL_OS_UNIX
-	return uint(pthread_self());
+	return size_t(pthread_self());
 	// doesnt work on linux kernel 2.6	return getpid();
 #endif
 
diff --git a/code/nel/src/net/unified_network.cpp b/code/nel/src/net/unified_network.cpp
index a15f12fbb..5e3e4689c 100644
--- a/code/nel/src/net/unified_network.cpp
+++ b/code/nel/src/net/unified_network.cpp
@@ -34,7 +34,7 @@ using namespace NLMISC;
 
 namespace NLNET {
 
-static uint ThreadCreator = 0;
+static size_t ThreadCreator = 0;
 
 static const uint64 AppIdDeadConnection = 0xDEAD;