diff --git a/src/js/game/hud/parts/mass_selector.js b/src/js/game/hud/parts/mass_selector.js
index f89d4055..5b5d53c3 100644
--- a/src/js/game/hud/parts/mass_selector.js
+++ b/src/js/game/hud/parts/mass_selector.js
@@ -40,7 +40,7 @@ export class HUDMassSelector extends BaseHUDPart {
     initialize() {
         this.deletionMarker = Loader.getSprite("sprites/misc/deletion_marker.png");
 
-        this.currentSelectionStart = null;
+        this.currentSelectionStartWorld = null;
         this.currentSelectionEnd = null;
         this.selectedUids = new Set();
 
@@ -146,7 +146,7 @@ export class HUDMassSelector extends BaseHUDPart {
             this.selectedUids = new Set();
         }
 
-        this.currentSelectionStart = pos.copy();
+        this.currentSelectionStartWorld = this.root.camera.screenToWorld(pos.copy());
         this.currentSelectionEnd = pos.copy();
         return STOP_PROPAGATION;
     }
@@ -156,14 +156,14 @@ export class HUDMassSelector extends BaseHUDPart {
      * @param {Vector} pos
      */
     onMouseMove(pos) {
-        if (this.currentSelectionStart) {
+        if (this.currentSelectionStartWorld) {
             this.currentSelectionEnd = pos.copy();
         }
     }
 
     onMouseUp() {
-        if (this.currentSelectionStart) {
-            const worldStart = this.root.camera.screenToWorld(this.currentSelectionStart);
+        if (this.currentSelectionStartWorld) {
+            const worldStart = this.currentSelectionStartWorld;
             const worldEnd = this.root.camera.screenToWorld(this.currentSelectionEnd);
 
             const tileStart = worldStart.toTileSpace();
@@ -181,7 +181,7 @@ export class HUDMassSelector extends BaseHUDPart {
                 }
             }
 
-            this.currentSelectionStart = null;
+            this.currentSelectionStartWorld = null;
             this.currentSelectionEnd = null;
         }
     }
@@ -197,8 +197,8 @@ export class HUDMassSelector extends BaseHUDPart {
     draw(parameters) {
         const boundsBorder = 2;
 
-        if (this.currentSelectionStart) {
-            const worldStart = this.root.camera.screenToWorld(this.currentSelectionStart);
+        if (this.currentSelectionStartWorld) {
+            const worldStart = this.currentSelectionStartWorld;
             const worldEnd = this.root.camera.screenToWorld(this.currentSelectionEnd);
 
             const realWorldStart = worldStart.min(worldEnd);