diff --git a/code/ryzom/client/src/client_chat_manager.cpp b/code/ryzom/client/src/client_chat_manager.cpp
index 1d0fb3f81..1bf6227d9 100644
--- a/code/ryzom/client/src/client_chat_manager.cpp
+++ b/code/ryzom/client/src/client_chat_manager.cpp
@@ -1370,7 +1370,7 @@ class CHandlerTalk : public IActionHandler
 				else
 				{
 					CInterfaceManager *im = CInterfaceManager::getInstance();
-					im->displaySystemInfo (ucstring(cmd+": ")+CI18N::get ("uiCommandNotExists"));
+					im->displaySystemInfo (ucstring::makeFromUtf8(cmd) + ": " + CI18N::get ("uiCommandNotExists"));
 				}
 			}
 			else
diff --git a/code/ryzom/client/src/interface_v3/chat_window.cpp b/code/ryzom/client/src/interface_v3/chat_window.cpp
index af0942bc9..207f09aba 100644
--- a/code/ryzom/client/src/interface_v3/chat_window.cpp
+++ b/code/ryzom/client/src/interface_v3/chat_window.cpp
@@ -1308,7 +1308,7 @@ public:
 			else
 			{
 				CInterfaceManager *im = CInterfaceManager::getInstance();
-				im->displaySystemInfo (ucstring(cmd+": ")+CI18N::get ("uiCommandNotExists"));
+				im->displaySystemInfo (ucstring::makeFromUtf8(cmd) + ": " + CI18N::get ("uiCommandNotExists"));
 			}
 		}
 		else