diff --git a/share/scripts/_find_nonzero_sample.lua b/share/scripts/_find_nonzero_sample.lua
index b79f832c9c..485199b1fc 100644
--- a/share/scripts/_find_nonzero_sample.lua
+++ b/share/scripts/_find_nonzero_sample.lua
@@ -25,7 +25,8 @@ function factory () return function ()
 
 		-- to read the Region data, we use the Readable interface of the Region
 		-- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Readable
-		local rd = r:to_readable ()
+		local a = r.to_audioregion()
+		local rd = a:to_readable ()
 
 		local n_samples = rd:readable_length ()
 		local n_channels = rd:n_channels ()
diff --git a/share/scripts/rubberband_swing.lua b/share/scripts/rubberband_swing.lua
index 52ce2c1bcc..35a25a0915 100644
--- a/share/scripts/rubberband_swing.lua
+++ b/share/scripts/rubberband_swing.lua
@@ -63,7 +63,7 @@ function factory () return function ()
 		local rb = ARDOUR.LuaAPI.Rubberband (ar, false)
 
 		-- the rubberband-filter also implements the readable API.
-		-- https://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Readable
+		-- https://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:AudioReadable
 		-- This allows to read from the master-source of the given audio-region.
 		-- Any prior time-stretch or pitch-shift are ignored when reading, however
 		-- processing retains the previous settings
diff --git a/share/scripts/s_region_gain.lua b/share/scripts/s_region_gain.lua
index 87a1760b0f..35ab7c9210 100644
--- a/share/scripts/s_region_gain.lua
+++ b/share/scripts/s_region_gain.lua
@@ -22,8 +22,9 @@ function factory () return function ()
 		end
 
 		-- to read the Region data, we use the Readable interface of the Region
-		-- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Readable
-		local rd = r:to_readable ()
+		-- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:AudioReadable
+		local a = r.to_audioregion
+		local rd = a:to_readable ()	
 
 		local n_samples = rd:readable_length ()
 		local n_channels = rd:n_channels ()