diff --git a/main.js b/main.js
index 65c3683..5405063 100644
--- a/main.js
+++ b/main.js
@@ -66,7 +66,7 @@ var MyPlugin = class extends import_obsidian.Plugin {
             if (newkey[newkey.length - 1] == ":") {
               newkey = newkey.slice(0, newkey.length - 1);
             }
-            if (!locations[newkey]) {
+            if (!(newkey in locations)) {
               locations[newkey] = linenum;
               visitslocs[newkey] = 0;
             }
@@ -104,7 +104,7 @@ function generatenodes(linenum, text, fromnode2, edgelabel) {
   if (whereto.length != 1) {
     edgelabel = "true";
   }
-  if (!locations[whereto[0]]) {
+  if (!(whereto[0] in locations)) {
     newnode = { "id": nodeid, "x": workingx, "y": workingy, "width": 550, "height": 25 * ("```\nERROR: Jumping to non-existant\nlocation " + whereto[0].trim() + "\n```").split("\n").length, "type": "text", "text": "```\nERROR: Jumping to non-existant\nlocation " + whereto[0].trim() + "\n```", "startline": -1, "endline": -1 };
     workingy = workingy + 300;
     workingx = workingx + 50 * nodeid;
diff --git a/src/index.ts b/src/index.ts
index 3fba905..de251f5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -52,7 +52,7 @@ export default class MyPlugin extends Plugin {
 							newkey = newkey.slice(0,newkey.length-1)
 						}
 						//Populate locations and visits array with line numbers and all 0's
-						if (!locations[newkey]) {
+						if (!(newkey in locations)) {
 							locations[newkey] = linenum;
 							visitslocs[newkey] = 0
 						}
@@ -101,7 +101,7 @@ function generatenodes(linenum: any, text: any, fromnode: any, edgelabel: string
 		edgelabel = "true"
 	}
 	//Error Handling for trying to jump to a non-existant location
-	if(!locations[whereto[0]]){
+	if(!(whereto[0] in locations)){
 		//Make the error node
 		newnode = {"id":nodeid, "x": workingx, "y": workingy, "width": 550,"height": 25*("```\nERROR: Jumping to non-existant\nlocation " + whereto[0].trim() + "\n```").split("\n").length, "type": "text", "text": "```\nERROR: Jumping to non-existant\nlocation " + whereto[0].trim() + "\n```", "startline": -1,"endline": -1}
 		workingy = workingy + 300