diff --git a/eastern flames/objects/ARTICULATOR/Step_0.gml b/eastern flames/objects/ARTICULATOR/Step_0.gml
index 7560b25..df75d68 100644
--- a/eastern flames/objects/ARTICULATOR/Step_0.gml	
+++ b/eastern flames/objects/ARTICULATOR/Step_0.gml	
@@ -3,8 +3,8 @@ if select && selectedunit == noone {
 	var mousex = floor(mouse_x/global.tilesize.x);
 	var mousey = floor(mouse_y/global.tilesize.y);
 	log(mousex, mousey);
-	if mousex < array_length(global.map) {
-		if mousey < array_length(global.map[mousex]) {
+	if mousex < array_length(global.map)  && mousex >= 0 {
+		if mousey < array_length(global.map[mousex]) && mousey >= 0 {
 			var i;
 			for (i=0; i<array_length(global.map[mousex][mousey].contents); i++) {
 				if global.map[mousex][mousey].contents[i].object_index == o_unit {
@@ -31,8 +31,8 @@ var mousex = floor(mouse_x/global.tilesize.x);
 var mousey = floor(mouse_y/global.tilesize.y);
 //log(mousex, mousey);
 hoveredunit = selectedunit;
-if mousex < array_length(global.map) {
-	if mousey < array_length(global.map[mousex]) {
+if mousex < array_length(global.map) && mousex >= 0 {
+	if mousey < array_length(global.map[mousex]) && mousey >= 0 {
 		var i;
 		for (i=0; i<array_length(global.map[mousex][mousey].contents); i++) {
 			if global.map[mousex][mousey].contents[i].object_index == o_unit {