diff --git a/mods/solarmana/README.txt b/mods/solarmana/README.txt
index e96efbde..fe06b05e 100644
--- a/mods/solarmana/README.txt
+++ b/mods/solarmana/README.txt
@@ -4,7 +4,7 @@ Solar Mana Mod [solarmana]
 A mana regeneration controller: only regenerate mana in sunlight
 or on special nodes.
 
-Version: 0.1.0
+Version: 0.3.0
 Licence: LGPL 2.1 or later
 
 Report bugs or request help on the forum topic.
@@ -25,6 +25,10 @@ Dependencies
 ------------
 * mana: https://forum.minetest.net/viewtopic.php?f=11&t=11154
 
+Contributors
+------------
+Mg (LeMagnesium) - node group handling
+
 Installation
 ------------
 
diff --git a/mods/solarmana/init.lua b/mods/solarmana/init.lua
index eef0caf0..caa38c21 100644
--- a/mods/solarmana/init.lua
+++ b/mods/solarmana/init.lua
@@ -91,13 +91,13 @@ minetest.register_globalstep(function(dtime)
             end
 
             for key, value in pairs(mana_from_node) do
-		        if key:split(":")[1] == "group" then
-			        local groupname = key:split(":")[2]
-			        if minetest.get_node_group(node.name, groupname) > 0 then
-				        regen_to = math.max(regen_to, value) -- We get the greater one (if the node is part of 2 or more groups)
-			        end
-		        end
-	        end
+		if key:split(":")[1] == "group" then
+			local groupname = key:split(":")[2]
+			if minetest.get_node_group(node.name, groupname) > 0 then
+				regen_to = math.max(regen_to, value) -- We get the greater one (if the node is part of 2 or more groups)
+			end
+		end
+	    end
 
             mana.setregen(name, regen_to)
             --print("Regen to "..regen_to.." : "..light_day.."/"..light_now.."/"..light_night)