diff --git a/nel/include/nel/gui/view_text.h b/nel/include/nel/gui/view_text.h
index 959c82855..2ffaa8d49 100644
--- a/nel/include/nel/gui/view_text.h
+++ b/nel/include/nel/gui/view_text.h
@@ -247,7 +247,7 @@ namespace NLGUI
 		std::string _HardTextFormat;
 		std::string _HardText;
 		std::string _Text;
-		size_t _TextLength;
+		mutable sint _TextLength;
 		/// index of the computed String associated to this text control
 		uint _Index;
 		/// info on the computed String associated to this text control
@@ -443,7 +443,7 @@ namespace NLGUI
 		void setup ();
 		void setupDefault ();
 
-		void setStringSelectionSkipingSpace(uint stringId, const ucstring &text, sint charStart, sint charEnd);
+		void setStringSelectionSkipingSpace(uint stringId, const std::string &text, sint charStart, sint charEnd);
 
 	//	void pushString(const ucstring &str, bool deleteSpaceAtStart = false);
 
diff --git a/nel/src/3d/font_manager.cpp b/nel/src/3d/font_manager.cpp
index 4a8162f51..872c1fd3d 100644
--- a/nel/src/3d/font_manager.cpp
+++ b/nel/src/3d/font_manager.cpp
@@ -130,6 +130,7 @@ void CFontManager::computeString (NLMISC::CUtfStringView sv,
 	output.CacheVersion = getCacheVersion();
 
 	uint j = 0;
+	size_t idx = 0;
 	{
 		CVertexBufferReadWrite vba;
 		output.Vertices.lock (vba);
@@ -138,8 +139,7 @@ void CFontManager::computeString (NLMISC::CUtfStringView sv,
 		hlfPixScrH = 0.f;
 
 		// For all chars
-		//for (uint i = 0; i < s.size(); i++)
-		for (NLMISC::CUtfStringView::iterator it(sv.begin()), end(sv.end()); it != end; ++it)
+		for (NLMISC::CUtfStringView::iterator it(sv.begin()), end(sv.end()); it != end; ++it, ++idx)
 		{
 			// Creating font
 			k.Char = *it;
@@ -211,7 +211,8 @@ void CFontManager::computeString (NLMISC::CUtfStringView sv,
 		}
 	}
 	output.Vertices.setNumVertices (j);
-	output.Length = j >> 2;
+	output.Length = idx;
+	nlassert(output.Length == NLMISC::CUtfStringView(output.Text).count());
 
 	// compile string info
 	output.StringWidth = (float)penx;
@@ -316,6 +317,7 @@ void CFontManager::computeStringInfo (	NLMISC::CUtfStringView sv,
 		}
 	}
 	output.Length = idx;
+	nlassert(output.Length == std::min(len, NLMISC::CUtfStringView(output.Text).count()));
 
 	// compile string info
 	output.StringWidth = (float)penx;