diff --git a/TODO b/TODO
index c67e5121..0dd8a5fe 100644
--- a/TODO
+++ b/TODO
@@ -67,19 +67,6 @@
 
 
 
-- try:
-
-	$ vips max babe.v --x-array --size 0
-	Segmentation fault (core dumped)
-
-- try:
-
-	im = VIPS::Image.new(ARGV[0])
-	mask = im.less(240)
-	columns, rows = mask.project
-
-  with wtc.jpg, segv if libvips is compiled with -O, OK without
-
 - need to do mosaicing 
 
 - now vips_linear() has uchar output, can we do something with orc?
diff --git a/libvips/arithmetic/max.c b/libvips/arithmetic/max.c
index 1ed2ca3b..46b388b8 100644
--- a/libvips/arithmetic/max.c
+++ b/libvips/arithmetic/max.c
@@ -447,7 +447,7 @@ vips_max_class_init( VipsMaxClass *class )
 		_( "Number of maximum values to find" ),
 		VIPS_ARGUMENT_OPTIONAL_INPUT,
 		G_STRUCT_OFFSET( VipsMax, size ),
-		0, 1000000, 10 );
+		1, 1000000, 10 );
 
 	VIPS_ARG_BOXED( class, "out_array", 6, 
 		_( "Output array" ), 
diff --git a/libvips/arithmetic/min.c b/libvips/arithmetic/min.c
index 96969836..5daad851 100644
--- a/libvips/arithmetic/min.c
+++ b/libvips/arithmetic/min.c
@@ -450,7 +450,7 @@ vips_min_class_init( VipsMinClass *class )
 		_( "Number of minimum values to find" ),
 		VIPS_ARGUMENT_OPTIONAL_INPUT,
 		G_STRUCT_OFFSET( VipsMin, size ),
-		0, 1000000, 10 );
+		1, 1000000, 10 );
 
 	VIPS_ARG_BOXED( class, "out_array", 6, 
 		_( "Output array" ),