diff --git a/platform/lang-impl/src/com/intellij/webcore/packaging/InstalledPackagesPanel.java b/platform/lang-impl/src/com/intellij/webcore/packaging/InstalledPackagesPanel.java
index 2c0317a14677..c68f83bd6372 100644
--- a/platform/lang-impl/src/com/intellij/webcore/packaging/InstalledPackagesPanel.java
+++ b/platform/lang-impl/src/com/intellij/webcore/packaging/InstalledPackagesPanel.java
@@ -68,6 +68,9 @@ public class InstalledPackagesPanel extends JPanel {
         return tableCellRenderer;
       }
     };
+    // Defence from javax.swing.JTable.initializeLocalVars:
+    //     setPreferredScrollableViewportSize(new Dimension(450, 400));
+    myPackagesTable.setPreferredScrollableViewportSize(null);
     myPackagesTable.getTableHeader().setReorderingAllowed(false);
 
     myUpgradeButton = new AnActionButton("Upgrade", IconUtil.getMoveUpIcon()) {
@@ -94,7 +97,6 @@ public class InstalledPackagesPanel extends JPanel {
       })
       .addExtraAction(myUpgradeButton);
 
-    decorator.setPreferredSize(new Dimension(500, 500));
     add(decorator.createPanel());
     myInstallButton = decorator.getActionsPanel().getAnActionButton(CommonActionsPanel.Buttons.ADD);
     myUninstallButton = decorator.getActionsPanel().getAnActionButton(CommonActionsPanel.Buttons.REMOVE);
diff --git a/python/src/com/jetbrains/python/packaging/ui/PyInstalledPackagesPanel.java b/python/src/com/jetbrains/python/packaging/ui/PyInstalledPackagesPanel.java
index 3f30b1d4a854..d894786b7dd6 100644
--- a/python/src/com/jetbrains/python/packaging/ui/PyInstalledPackagesPanel.java
+++ b/python/src/com/jetbrains/python/packaging/ui/PyInstalledPackagesPanel.java
@@ -34,6 +34,7 @@ import com.jetbrains.python.sdk.flavors.IronPythonSdkFlavor;
 import com.jetbrains.python.sdk.flavors.PythonSdkFlavor;
 import org.jetbrains.annotations.NotNull;
 
+import java.awt.*;
 import java.util.List;
 import java.util.Set;
 
@@ -50,6 +51,7 @@ public class PyInstalledPackagesPanel extends InstalledPackagesPanel {
 
   public PyInstalledPackagesPanel(Project project, PackagesNotificationPanel area) {
     super(project, area);
+    setPreferredSize(new Dimension(500, 500));
 
     myNotificationArea.addLinkHandler(INSTALL_SETUPTOOLS, new Runnable() {
       @Override