diff --git a/debian/patches/bts573299-rrdgraph-M b/debian/patches/bts573299-rrdgraph-M
--- /dev/null
@@ -0,0 +1,13 @@
+diff --git a/src/rrd_graph.c b/src/rrd_graph.c
+index 2c4f71a..275a8c0 100644
+--- a/src/rrd_graph.c
++++ b/src/rrd_graph.c
+@@ -4191,7 +4191,7 @@ void rrd_graph_options(
+ int col_start, col_end;
+
+ opt = getopt_long(argc, argv,
+- "Aa:B:b:c:Dd:Ee:Ff:G:gh:IiJjL:l:Nn:Bb:oPR:rS:s:T:t:u:v:W:w:X:x:Yy:z",
++ "Aa:B:b:c:Dd:Ee:Ff:G:gh:IiJjL:l:MNn:oPR:rS:s:T:t:u:v:W:w:X:x:Yy:z",
+ long_options, &option_index);
+ if (opt == EOF)
+ break;