diff --git a/singleimage.py b/singleimage.py
index cc37b64..6deba33 100644
--- a/singleimage.py
+++ b/singleimage.py
@@ -53,11 +53,11 @@ class ChunkymapOfflineRenderer:
 
         geometry_string = "-10000:-10000+20000+20000"
         #VERY BIG since singleimage mode (if no geometry param, minetestmapper-numpy reverts to its default which is -2000 2000 -2000 2000):
-		region_string = "-10000 10000 -10000 10000"
-		
+        region_string = "-10000 10000 -10000 10000"
+        
         #geometry_string = str(min_x)+":"+str(min_z)+"+"+str(int(max_x)-int(min_x)+1)+"+"+str(int(max_z)-int(min_z)+1)  # +1 since max-min is exclusive and width must be inclusive for minetestmapper.py
-		region_param = " --region "+region_string  # minetestmapper-numpy.py --region xmin xmax zmin zmax
-		geometry_param = " --geometry -10000:-10000+20000+20000"  # minetestmapper-expertmm.py --geometry <xmin>:<zmin>+<width>+<height>
+        region_param = " --region "+region_string  # minetestmapper-numpy.py --region xmin xmax zmin zmax
+        geometry_param = " --geometry -10000:-10000+20000+20000"  # minetestmapper-expertmm.py --geometry <xmin>:<zmin>+<width>+<height>
         limit_param = geometry_param
         #expertmm_region_string = str(min_x) + ":" + str(max_x) + "," + str(min_z) + ":" + str(max_z)
 
@@ -70,7 +70,7 @@ class ChunkymapOfflineRenderer:
             squote = "'"
         io_string = " --input \""+self.world_path+"\" --output \""+tmp_png_path+"\""
         if "numpy" in self.minetestmapper_py_path:
-			limit_param = region_param
+            limit_param = region_param
             io_string = " \""+self.world_path+"\" \""+tmp_png_path+"\""
             #geometry_param = " --region " + str(min_x) + " " + str(max_x) + " " + str(min_z) + " " + str(max_z)
         cmd_no_out_string = python_exe_path+" "+self.minetestmapper_py_path+" --bgcolor "+squote+FLAG_EMPTY_HEXCOLOR+squote+io_string+limit_param