diff --git a/code/nel/include/nel/gui/widget_manager.h b/code/nel/include/nel/gui/widget_manager.h
index 21d1e7a38..9d8ff060e 100644
--- a/code/nel/include/nel/gui/widget_manager.h
+++ b/code/nel/include/nel/gui/widget_manager.h
@@ -335,7 +335,7 @@ namespace NLGUI
 												sint32 newW, sint32 newH) const;
 		
 		// move windows according to new screen size
-		void moveAllWindowsToNewScreenSize(sint32 newScreenW, sint32 newScreenH, bool fixCurrentUI );
+		void moveAllWindowsToNewScreenSize(uint32 newScreenW, uint32 newScreenH, bool fixCurrentUI );
 		
 		void updateAllLocalisedElements();
 
diff --git a/code/nel/src/gui/group_table.cpp b/code/nel/src/gui/group_table.cpp
index 8b5b94b90..a82ad5617 100644
--- a/code/nel/src/gui/group_table.cpp
+++ b/code/nel/src/gui/group_table.cpp
@@ -715,7 +715,7 @@ namespace NLGUI
 				// *** Get the column sizes, we need to know min for the table
 
 				uint i;
-				sint column = 0;
+				uint column = 0;
 				_Columns.clear ();
 				for (i=0; i<_Cells.size(); i++)
 				{
@@ -783,13 +783,12 @@ namespace NLGUI
 					// new column, set rowspan from current <TD>
 					_Columns[column].RowSpan = cell->RowSpan;
 					float colspan = 1.f / cell->ColSpan;
-					float rowspan = 1.f / cell->RowSpan;
 
 					// Update sizes
 					if (cellWidth*colspan > _Columns[column].Width)
-						_Columns[column].Width = cellWidth*colspan;
+						_Columns[column].Width = (sint32)(cellWidth*colspan);
 					if (cell->WidthMax*colspan > _Columns[column].WidthMax)
-						_Columns[column].WidthMax = cell->WidthMax*colspan;
+						_Columns[column].WidthMax = (sint32)(cell->WidthMax*colspan);
 					if (cell->TableRatio*colspan > _Columns[column].TableRatio)
 						_Columns[column].TableRatio = cell->TableRatio*colspan;
 					if (cell->WidthWanted*colspan + additionnalWidth > _Columns[column].WidthWanted)
@@ -1035,7 +1034,7 @@ namespace NLGUI
 					if (cell->TableColumnIndex > 0)
 					{
 						// we have active rowspan, must add up 'skipped' columns
-						for( ; column<cell->TableColumnIndex; ++column)
+						for( ; column < (uint)cell->TableColumnIndex; ++column)
 							currentX += _Columns[column].Width + padding*2 + CellSpacing;
 					}
 
@@ -1081,7 +1080,7 @@ namespace NLGUI
 					cell->Group->updateCoords();
 
 					// Resize the row array
-					float rowspan = 1 / cell->RowSpan;
+					float rowspan = 1.f / (float)cell->RowSpan;
 					_Rows.back().Height = std::max((sint32)(cell->Height*rowspan), std::max(_Rows.back().Height, (sint32)(cell->Group->getH()*rowspan)));
 
 					// Next column
diff --git a/code/nel/src/gui/libwww.cpp b/code/nel/src/gui/libwww.cpp
index 54e28abf0..800c4d1e3 100644
--- a/code/nel/src/gui/libwww.cpp
+++ b/code/nel/src/gui/libwww.cpp
@@ -398,7 +398,7 @@ namespace NLGUI
 			{
 				time_t now;
 				time(&now);
-				if (expires < now)
+				if (expires < (uint32)now)
 				{
 					nlwarning("cookie expired, remove from list '%s'", nsformat);
 					HTTPCookies[domain].erase(chunks[5]);
diff --git a/code/nel/src/gui/widget_manager.cpp b/code/nel/src/gui/widget_manager.cpp
index d4a45c592..37a115965 100644
--- a/code/nel/src/gui/widget_manager.cpp
+++ b/code/nel/src/gui/widget_manager.cpp
@@ -1774,7 +1774,7 @@ namespace NLGUI
 	}
 
 	// ------------------------------------------------------------------------------------------------
-	void CWidgetManager::moveAllWindowsToNewScreenSize(sint32 newScreenW, sint32 newScreenH, bool fixCurrentUI)
+	void CWidgetManager::moveAllWindowsToNewScreenSize(uint32 newScreenW, uint32 newScreenH, bool fixCurrentUI)
 	{
 		std::vector< CWidgetManager::SMasterGroup > &_MasterGroups = getAllMasterGroup();
 		// If resolutions correctly setuped, and really different from new setup
@@ -2083,7 +2083,7 @@ namespace NLGUI
 
 		if (CInterfaceElement::getEditorMode())
 		{
-			for( int i = 0; i < editorSelection.size(); i++ )
+			for(uint i = 0; i < editorSelection.size(); ++i)
 			{
 				CInterfaceElement *e = getElementFromId(editorSelection[i]);
 				if (e != NULL)
@@ -3376,8 +3376,8 @@ namespace NLGUI
 	void CWidgetManager::getEditorSelection( std::vector< std::string > &selection )
 	{
 		selection.clear();
-		for( int i = 0; i < editorSelection.size(); i++ )
-			selection.push_back( editorSelection[ i ] );
+		for(uint i = 0; i < editorSelection.size(); ++i)
+			selection.push_back(editorSelection[i]);
 	}
 
 	void CWidgetManager::selectWidget( const std::string &name )
@@ -3539,7 +3539,7 @@ namespace NLGUI
 		std::vector< CInterfaceElement* > elms;
 
 		// Resolve the widget names
-		for( int i = 0; i < editorSelection.size(); i++ )
+		for(uint i = 0; i < editorSelection.size(); ++i)
 		{
 			CInterfaceElement *e = getElementFromId(editorSelection[i]);
 			if (e != NULL)
@@ -3562,7 +3562,7 @@ namespace NLGUI
 		std::string oldId;
 
 		// Reparent the widgets to the new group
-		for( int i = 0; i < elms.size(); i++ )
+		for(uint i = 0; i < elms.size(); ++i)
 		{
 			CInterfaceElement *e = elms[i];
 			oldId = e->getId();
@@ -3631,7 +3631,7 @@ namespace NLGUI
 	{
 		reset();
 
-		for( int i = 0; i < _MasterGroups.size(); i++ )
+		for(uint i = 0; i < _MasterGroups.size(); ++i)
 			delete _MasterGroups[i].Group;
 		_MasterGroups.clear();
 
diff --git a/code/nel/src/misc/bitmap_gif.cpp b/code/nel/src/misc/bitmap_gif.cpp
index 74f75a968..34ece8b60 100644
--- a/code/nel/src/misc/bitmap_gif.cpp
+++ b/code/nel/src/misc/bitmap_gif.cpp
@@ -260,12 +260,13 @@ uint8 CBitmap::readGIF( NLMISC::IStream &f )
 				dstOffset+= dstChannels;
 
 				uint32 index = curFrame->RasterBits[srcOffset];
-				if (index != transparency)
+
+				if ((sint32)index != transparency)
 				{
 					// make sure color index is not outside colormap
 					if (ColorMap)
 					{
-						if (index > ColorMap->ColorCount)
+						if ((sint)index > ColorMap->ColorCount)
 						{
 							index = 0;
 						}