diff --git a/data/tools/rmtrans/rmtrans.py b/data/tools/rmtrans/rmtrans.py
index faf6ebb29bc..d1d1383dbb2 100755
--- a/data/tools/rmtrans/rmtrans.py
+++ b/data/tools/rmtrans/rmtrans.py
@@ -3,39 +3,39 @@
 from gimpfu import *
 
 def rmtrans(img,tdrawable):
-	pdb.gimp_image_undo_group_start(img)
-	if pdb.gimp_selection_is_empty(img):
-		pdb.gimp_selection_all(img)
-	selection = pdb.gimp_selection_save(img)
-	pdb.gimp_selection_none(img)
-	alpha,temp,temp,temp = pdb.plug_in_decompose(img,tdrawable,"Alpha",1) # get alpha channel
-	alpha = pdb.gimp_image_get_active_layer(alpha) # turn it into a layer
-	pdb.gimp_edit_copy(alpha) 
-	pdb.gimp_floating_sel_to_layer(pdb.gimp_edit_paste(tdrawable,TRUE))
-	alpha = pdb.gimp_image_get_active_layer(img) # move alpha layer into image (copy-paste)
-	pdb.gimp_context_set_antialias(False)
-	pdb.gimp_context_set_sample_threshold(0.0) # configuration for color selection
-	for i in xrange(10):
-		pdb.gimp_image_select_color(img,CHANNEL_OP_REPLACE,alpha,(i,i,i)) # select alpha values <= 10
-		pdb.gimp_image_select_item(img,CHANNEL_OP_INTERSECT,selection) # bound it to the previously selected area (before plugin execution)
-		if not(pdb.gimp_selection_is_empty(img)):
-			pdb.gimp_edit_clear(tdrawable) # and clear it
-	print(alpha)
-	pdb.gimp_image_remove_layer(img,alpha)
-	pdb.gimp_selection_none(img)
-	pdb.gimp_image_undo_group_end(img)
+    pdb.gimp_image_undo_group_start(img)
+    if pdb.gimp_selection_is_empty(img):
+        pdb.gimp_selection_all(img)
+    selection = pdb.gimp_selection_save(img)
+    pdb.gimp_selection_none(img)
+    alpha,temp,temp,temp = pdb.plug_in_decompose(img,tdrawable,"Alpha",1) # get alpha channel
+    alpha = pdb.gimp_image_get_active_layer(alpha) # turn it into a layer
+    pdb.gimp_edit_copy(alpha)
+    pdb.gimp_floating_sel_to_layer(pdb.gimp_edit_paste(tdrawable,TRUE))
+    alpha = pdb.gimp_image_get_active_layer(img) # move alpha layer into image (copy-paste)
+    pdb.gimp_context_set_antialias(False)
+    pdb.gimp_context_set_sample_threshold(0.0) # configuration for color selection
+    for i in xrange(10):
+        pdb.gimp_image_select_color(img,CHANNEL_OP_REPLACE,alpha,(i,i,i)) # select alpha values <= 10
+        pdb.gimp_image_select_item(img,CHANNEL_OP_INTERSECT,selection) # bound it to the previously selected area (before plugin execution)
+        if not(pdb.gimp_selection_is_empty(img)):
+            pdb.gimp_edit_clear(tdrawable) # and clear it
+    print(alpha)
+    pdb.gimp_image_remove_layer(img,alpha)
+    pdb.gimp_selection_none(img)
+    pdb.gimp_image_undo_group_end(img)
 
 register(
-	"python_fu_rmtrans",
-	"Remove all pixels under a given alpha threshold.",
-	"Remove all pixels under a given alpha threshold.",
-	"Samuel Kim",
-	"Samuel Kim",
-	"2012",
-	"<Image>/Colors/Remove almost-transparent pixels",
-	"*",
-	[],
-	[],
-	rmtrans)
+        "python_fu_rmtrans",
+        "Remove all pixels under a given alpha threshold.",
+        "Remove all pixels under a given alpha threshold.",
+        "Samuel Kim",
+        "Samuel Kim",
+        "2012",
+        "<Image>/Colors/Remove almost-transparent pixels",
+        "*",
+        [],
+        [],
+        rmtrans)
 
 main()