diff --git a/mmnode-netrate b/mmnode-netrate
index e11363e..08be258 100755
--- a/mmnode-netrate
+++ b/mmnode-netrate
@@ -4,7 +4,7 @@
 import time
 from mmgen.common import *
 
-opts_data = {
+opts_data = lambda: {
 	'desc':    'Bitcoin daemon network rate monitor',
 	'usage':   '[opts]',
 	'options': """
diff --git a/mmnode-peerblocks b/mmnode-peerblocks
index 53db914..11c5c01 100755
--- a/mmnode-peerblocks
+++ b/mmnode-peerblocks
@@ -4,7 +4,7 @@
 import time,threading
 from mmgen.common import *
 
-opts_data = {
+opts_data = lambda: {
 	'desc':    'List blocks in flight, disconnect stalling nodes',
 	'usage':   '[opts]',
 	'options': """
diff --git a/mmnode-play-sound b/mmnode-play-sound
index 5af9897..7762555 100755
--- a/mmnode-play-sound
+++ b/mmnode-play-sound
@@ -26,7 +26,7 @@ from mmgen.node_tools.Sound import *
 from mmgen.share import Opts
 volume = 100
 
-opts_data = {
+opts_data = lambda: {
 	'prog_name': sys.argv[0].split('/')[-1],
 	'desc': 'Play a sound file at controlled volume',
 	'usage': '[opts]',