diff --git a/tools/GUIEditor/CGUIEditWorkspace.cpp b/tools/GUIEditor/CGUIEditWorkspace.cpp
index 0b0eb759..a2fec5de 100644
--- a/tools/GUIEditor/CGUIEditWorkspace.cpp
+++ b/tools/GUIEditor/CGUIEditWorkspace.cpp
@@ -804,7 +804,7 @@ void CGUIEditWorkspace::setDrawGrid(bool drawGrid)
 	DrawGrid = drawGrid;
 }
 
-void CGUIEditWorkspace::setGridSize(core::dimension2di	&gridSize)
+void CGUIEditWorkspace::setGridSize(const core::dimension2di& gridSize)
 {
 	GridSize = gridSize;
 	if (GridSize.Width < 2)
diff --git a/tools/GUIEditor/CGUIEditWorkspace.h b/tools/GUIEditor/CGUIEditWorkspace.h
index e8f3e3f5..21dace0c 100644
--- a/tools/GUIEditor/CGUIEditWorkspace.h
+++ b/tools/GUIEditor/CGUIEditWorkspace.h
@@ -61,7 +61,7 @@ namespace gui
 
 		//! grid drawing...
 		virtual void setDrawGrid(bool drawGrid);
-		virtual void setGridSize(core::dimension2di	&gridSize);
+		virtual void setGridSize(const core::dimension2di& gridSize);
 		virtual void setUseGrid(bool useGrid);
 
 		//! returns the first editable element under the mouse
diff --git a/tools/GUIEditor/CMemoryReadWriteFile.cpp b/tools/GUIEditor/CMemoryReadWriteFile.cpp
index a6903e69..9a40668d 100644
--- a/tools/GUIEditor/CMemoryReadWriteFile.cpp
+++ b/tools/GUIEditor/CMemoryReadWriteFile.cpp
@@ -93,4 +93,5 @@ s32 CMemoryReadWriteFile::read(void* buffer, u32 sizeToRead)
 	Pos += sizeToRead;
 
 	return sizeToRead;
-}
\ No newline at end of file
+}
+