diff -r -U 5 conky-1.9.0/src/specials.c /home/ted/conky/src/specials.c
--- conky-1.9.0/src/specials.c	2012-05-03 22:13:47.000000000 +0100
+++ /home/ted/conky/src/specials.c	2013-02-27 21:16:15.856669451 +0000
@@ -186,12 +186,12 @@
 		g->scale = defscale;
 		if (sscanf(args, "%1023s %d,%d %x %x", buf, &g->height, &g->width, &g->first_colour, &g->last_colour) == 5) {
 			return strndup(buf, text_buffer_size);
 		}
 		buf[0] = '\0';
-		g->height = 25;
-		g->width = 0;
+		g->height = default_graph_height;
+		g->width = default_graph_width;
 		if (sscanf(args, "%x %x %u", &g->first_colour, &g->last_colour, &g->scale) == 3) {
 			return NULL;
 		}
 		g->scale = defscale;
 		if (sscanf(args, "%x %x", &g->first_colour, &g->last_colour) == 2) {