diff --git a/color.py b/color.py
index 3ebb6b5..2b9aeaf 100644
--- a/color.py
+++ b/color.py
@@ -70,3 +70,5 @@ class ScottieS2(ScottieS1):
 	VIS_CODE = 0x38
 	SCAN = 88.064 - ScottieS1.INTER_CH_GAP
 	WIDTH = 160
+
+MODES = (MartinM1, MartinM2, ScottieS1, ScottieS2)
diff --git a/grayscale.py b/grayscale.py
index db08d86..5cd4d37 100644
--- a/grayscale.py
+++ b/grayscale.py
@@ -36,3 +36,5 @@ class Robot24BW(GrayscaleSSTV):
 	HEIGHT = 240
 	SYNC = 12
 	SCAN = 93
+
+MODES = (Robot8BW, Robot24BW)