diff --git a/src/js/game/hud/parts/base_toolbar.js b/src/js/game/hud/parts/base_toolbar.js
index ba3ce4bd..9eac5f1c 100644
--- a/src/js/game/hud/parts/base_toolbar.js
+++ b/src/js/game/hud/parts/base_toolbar.js
@@ -160,8 +160,10 @@ export class HUDBaseToolbar extends BaseHUDPart {
         }
 
         let newBuildingFound = false;
-        let direction =
-            !this.root.keyMapper.getBinding(KEYMAPPINGS.placement.rotateInverseModifier).pressed * 2 + 1;
+        const direction = this.root.keyMapper.getBinding(KEYMAPPINGS.placement.rotateInverseModifier)
+            .pressed
+            ? -1
+            : 1;
         let newIndex = this.lastSelectedIndex;
         for (let i = 0; i < this.primaryBuildings.length; ++i, newIndex += direction) {
             newIndex %= this.primaryBuildings.length;