diff --git a/src/Mod/Assembly/CommandInsertLink.py b/src/Mod/Assembly/CommandInsertLink.py
index 75c403d569..08e4fe5ebd 100644
--- a/src/Mod/Assembly/CommandInsertLink.py
+++ b/src/Mod/Assembly/CommandInsertLink.py
@@ -207,6 +207,27 @@ class TaskAssemblyInsertLink(QtCore.QObject):
             process_objects(guiDoc.TreeRootObjects, docItem)
             self.form.partList.expandAll()
 
+        self.adjustTreeWidgetSize()
+
+    def adjustTreeWidgetSize(self):
+        # Adjust the height of the part list based on item count
+        item_count = 1
+
+        def count_items(item):
+            nonlocal item_count
+            item_count += 1
+            for i in range(item.childCount()):
+                count_items(item.child(i))
+
+        for i in range(self.form.partList.topLevelItemCount()):
+            count_items(self.form.partList.topLevelItem(i))
+
+        item_height = self.form.partList.sizeHintForRow(0)
+        total_height = item_count * item_height
+        max_height = 500
+
+        self.form.partList.setMinimumHeight(min(total_height, max_height))
+
     def onFilterChange(self):
         filter_str = self.form.filterPartList.text().strip().lower()
 
diff --git a/src/Mod/Assembly/Gui/Resources/panels/TaskAssemblyInsertLink.ui b/src/Mod/Assembly/Gui/Resources/panels/TaskAssemblyInsertLink.ui
index bc5953f6de..4c485ffc75 100644
--- a/src/Mod/Assembly/Gui/Resources/panels/TaskAssemblyInsertLink.ui
+++ b/src/Mod/Assembly/Gui/Resources/panels/TaskAssemblyInsertLink.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>376</width>
-    <height>387</height>
+    <width>200</width>
+    <height>200</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -22,7 +22,14 @@
     </widget>
    </item>
    <item row="1" column="0">
-    <widget class="QTreeWidget" name="partList"/>
+    <widget class="QTreeWidget" name="partList">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+    </widget>
    </item>
    <item row="2" column="0">
     <layout class="QHBoxLayout" name="hLayout">