Index: trunk/src/rogue/fov_recursive_shadowcasting.cc
===================================================================
--- trunk/src/rogue/fov_recursive_shadowcasting.cc	(revision 454)
+++ trunk/src/rogue/fov_recursive_shadowcasting.cc	(revision 496)
@@ -59,5 +59,5 @@
 				bool transparent = m_map->is_transparent( c );
 
-				if ( dx*dx+dy*dy <= m_radius2 && (m_light_walls || transparent)) 
+				if ( dx*dx+dy*dy <= (m_radius2+1) && (m_light_walls || transparent)) 
 				{
 					m_map->set_visible( c, true );