diff --git a/packages/dockview-core/src/splitview/splitview.scss b/packages/dockview-core/src/splitview/splitview.scss
index 99b91b925..c46ceb250 100644
--- a/packages/dockview-core/src/splitview/splitview.scss
+++ b/packages/dockview-core/src/splitview/splitview.scss
@@ -102,6 +102,10 @@
             position: absolute;
             z-index: 99;
             outline: none;
+            user-select: none;
+            -webkit-user-select: none; // Safari
+            -moz-user-select: none; // Firefox
+            -ms-user-select: none; // IE 10 and IE 11
 
             &:active {
                 transition: background-color 0.1s ease-in-out;