diff --git a/src/guiChatConsole.cpp b/src/guiChatConsole.cpp
index b3c119555..4af1caa80 100644
--- a/src/guiChatConsole.cpp
+++ b/src/guiChatConsole.cpp
@@ -628,7 +628,7 @@ bool GUIChatConsole::OnEvent(const SEvent& event)
 			prompt.nickCompletion(names, backwards);
 			return true;
 		}
-		else if(event.KeyInput.Char != 0 && !event.KeyInput.Control)
+		else if(isprint(event.KeyInput.Char) && !event.KeyInput.Control)
 		{
 			#if defined(__linux__) && (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 9)
 				wchar_t wc = L'_';