diff --git a/src/math/p5.Vector.js b/src/math/p5.Vector.js
index e5275ad7cc..d255df9686 100644
--- a/src/math/p5.Vector.js
+++ b/src/math/p5.Vector.js
@@ -238,7 +238,7 @@ class Vector {
    * @param {Number} xVal - The new value for the x component.
    */
   set x(xVal) {
-    if (this.values.length > 1) {
+    if (this.values.length > 0) {
       this.values[0] = xVal;
     }
   }
diff --git a/test/unit/math/p5.Vector.js b/test/unit/math/p5.Vector.js
index bbe7c38a5b..80823e654a 100644
--- a/test/unit/math/p5.Vector.js
+++ b/test/unit/math/p5.Vector.js
@@ -2184,6 +2184,12 @@ suite('p5.Vector', function () {
       v = new Vector(1, 2, 3, 4);
       expect(v.toString()).toBe('vector[1, 2, 3, 4]');
     });
+
+    test('should show a value change for x with toString() for 1d Vector', function(){
+      v = new Vector(1);
+      v.x = 2;
+      expect(v.toString()).toBe('vector[2]');
+    })
   });
 
   describe('set heading', () => {