diff --git a/packages/devextreme-scss/scss/widgets/base/treeView/_index.scss b/packages/devextreme-scss/scss/widgets/base/treeView/_index.scss
index afe510b4489c..4c5e1c10eec3 100644
--- a/packages/devextreme-scss/scss/widgets/base/treeView/_index.scss
+++ b/packages/devextreme-scss/scss/widgets/base/treeView/_index.scss
@@ -12,6 +12,7 @@
     @include dx-icon($collapse-icon-name);
 
     display: flex;
+    flex-shrink: 0;
     align-items: center;
     justify-content: center;
     font-size: $font-size;