diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
index 1eade3e2..0cacd741 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.html
@@ -63,7 +63,7 @@
     </div>
     <div *ngIf="!isShowSearch" class="search-list">
       <cdk-virtual-scroll-viewport
-        itemSize="80"
+        itemSize="64"
         #cvsvDeptUser
         perfectScrollbar
         fxFlexFill
@@ -89,7 +89,7 @@
     <div *ngIf="isShowSearch" class="search-result">
       <cdk-virtual-scroll-viewport
         #cvsvDeptSearchUser
-        itemSize="20"
+        itemSize="64"
         perfectScrollbar
         fxFlexFill
       >
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html
index 82fba88d..dd4da3f8 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/organization/selected-user-list.dialog.component.html
@@ -22,7 +22,7 @@
   <mat-card-content>
     <div class="item-list">
       <cdk-virtual-scroll-viewport
-        itemSize="80"
+        itemSize="64"
         #cvsvDeptUser
         perfectScrollbar
         fxFlexFill