diff --git a/code/__HELPERS/game.dm b/code/__HELPERS/game.dm
index 463aa01beef..390716c4a37 100644
--- a/code/__HELPERS/game.dm
+++ b/code/__HELPERS/game.dm
@@ -37,6 +37,8 @@
 
 /proc/hear(var/range, var/atom/source)
 
+	if(!source || range == null) return
+
 	var/lum = source.luminosity
 	source.luminosity = 6
 
diff --git a/code/game/atoms_movable.dm b/code/game/atoms_movable.dm
index 86bce8b00ce..ad3ca36fbd7 100644
--- a/code/game/atoms_movable.dm
+++ b/code/game/atoms_movable.dm
@@ -90,7 +90,7 @@
 
 
 
-		while(src && target &&((((src.x < target.x && dx == EAST) || (src.x > target.x && dx == WEST)) && dist_travelled < range) || (a.has_gravity == 0)  || istype(src.loc, /turf/space)) && src.throwing && istype(src.loc, /turf))
+		while(src && target &&((((src.x < target.x && dx == EAST) || (src.x > target.x && dx == WEST)) && dist_travelled < range) || (a && a.has_gravity == 0)  || istype(src.loc, /turf/space)) && src.throwing && istype(src.loc, /turf))
 			// only stop when we've gone the whole distance (or max throw range) and are on a non-space tile, or hit something, or hit the end of the map, or someone picks it up
 			if(error < 0)
 				var/atom/step = get_step(src, dy)
diff --git a/code/modules/research/rdconsole.dm b/code/modules/research/rdconsole.dm
index a94d9c6f714..6c74d7cd87c 100644
--- a/code/modules/research/rdconsole.dm
+++ b/code/modules/research/rdconsole.dm
@@ -266,7 +266,7 @@ won't update every console in existence) but it's more of a hassle to do. Also,
 				usr << "\red The destructive analyzer is busy at the moment."
 			else
 				var/choice = input("Proceeding will destroy loaded item.") in list("Proceed", "Cancel")
-				if(choice == "Cancel") return
+				if(choice == "Cancel" || !linked_destroy) return
 				linked_destroy.busy = 1
 				screen = 0.1
 				updateUsrDialog()