diff --git a/src/components/popover/tab/mouse/mouse-tab.component.html b/src/components/popover/tab/mouse/mouse-tab.component.html
index e6ac1aae..00407d7b 100644
--- a/src/components/popover/tab/mouse/mouse-tab.component.html
+++ b/src/components/popover/tab/mouse/mouse-tab.component.html
@@ -91,7 +91,7 @@
                 [class.btn-primary]="mouseActionParam === MouseActionParam.decelerate"
                 (click)="setMouseActionParam(MouseActionParam.decelerate)">-</button>
             <button type="button" class="btn btn-default"
-                [class.btn-primary]="mouseActionParam === MouseActionParam.acelerate"
+                [class.btn-primary]="mouseActionParam === MouseActionParam.accelerate"
                 (click)="setMouseActionParam(MouseActionParam.accelerate)">+</button>
         </div>
     </div>