diff --git a/code/ryzom/common/src/game_share/object.cpp b/code/ryzom/common/src/game_share/object.cpp
index f395bcf7a..d15497ce4 100644
--- a/code/ryzom/common/src/game_share/object.cpp
+++ b/code/ryzom/common/src/game_share/object.cpp
@@ -1897,16 +1897,18 @@ uint32 CObject::instanceIdToUint32(const std::string& instanceId)
 
 	std::string clientIdStr = instanceId.substr(6,  clientIdIt-6);
 	std::string componentIdStr = instanceId.substr(clientIdIt+1,  size - clientIdIt);
-	char* ko=NULL;
-	uint32 clientId = static_cast<uint32>(strtol(clientIdStr.c_str(), &ko, 10));
-	if (*ko != '\0')
+	bool ko;
+	uint32 clientId;
+	ko = NLMISC::fromString(clientIdStr, clientId);
+	if (!ko)
 	{
 		nlwarning("R2Share: Wrong InstanceId(%s)", instanceId.c_str());
 		return 0;
 	}
 
-	uint32 componentId = static_cast<uint32>(strtol(componentIdStr.c_str(), &ko, 10));
-	if (*ko != '\0')
+	uint32 componentId;
+	ko = NLMISC::fromString(componentIdStr, componentId);
+	if (!ko)
 	{
 		nlwarning("R2Share: Wrong InstanceId(%s)", instanceId.c_str());
 		return 0;
diff --git a/code/ryzom/common/src/game_share/server_animation_module.cpp b/code/ryzom/common/src/game_share/server_animation_module.cpp
index 1db870ca9..577cd3078 100644
--- a/code/ryzom/common/src/game_share/server_animation_module.cpp
+++ b/code/ryzom/common/src/game_share/server_animation_module.cpp
@@ -3932,14 +3932,15 @@ void CServerAnimationModule::activateEasterEgg(class NLNET::IModuleProxy * /* ai
 
 		DROP_IF( itemAndQt.size() != 2, "Syntax error in activateEasterEgg", return );
 
-		char* ok = 0;
-		uint32 item = static_cast<uint32>(strtol(itemAndQt[0].c_str(), &ok, 10));
+		uint32 item;
+		bool ok = NLMISC::fromString(itemAndQt[0], item);
 
-		DROP_IF( *ok != '\0', "Error  activateEasterEgg", return);
+		DROP_IF( !ok, "Error  activateEasterEgg", return);
 
-		uint32 qt = static_cast<uint32>(strtol(itemAndQt[1].c_str(), &ok, 10));
+		uint32 qt;
+		ok = NLMISC::fromString(itemAndQt[1], qt);
 
-		DROP_IF( *ok != '\0', "Error in activateEasterEgg", return);
+		DROP_IF( !ok, "Error in activateEasterEgg", return);
 		DROP_IF( qt > 255, "Error in activateEasterEgg", return);
 		DROP_IF( item >= 	session->MissionItems.size(), "Error  activateEasterEgg", return);