diff --git a/java/idea-ui/src/com/intellij/openapi/roots/ui/configuration/libraryEditor/JavadocOrderRootTypeUIFactory.java b/java/idea-ui/src/com/intellij/openapi/roots/ui/configuration/libraryEditor/JavadocOrderRootTypeUIFactory.java
index 7fcb3f0365b4..16cd46279de8 100644
--- a/java/idea-ui/src/com/intellij/openapi/roots/ui/configuration/libraryEditor/JavadocOrderRootTypeUIFactory.java
+++ b/java/idea-ui/src/com/intellij/openapi/roots/ui/configuration/libraryEditor/JavadocOrderRootTypeUIFactory.java
@@ -31,6 +31,7 @@ import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.ui.AnActionButton;
 import com.intellij.ui.AnActionButtonUpdater;
+import com.intellij.ui.DumbAwareActionButton;
 import com.intellij.ui.ToolbarDecorator;
 import com.intellij.util.IconUtil;
 
@@ -66,7 +67,7 @@ public class JavadocOrderRootTypeUIFactory implements OrderRootTypeUIFactory {
 
     @Override
     protected void addToolbarButtons(ToolbarDecorator toolbarDecorator) {
-      AnActionButton specifyUrlButton = new AnActionButton(ProjectBundle.message("sdk.paths.specify.url.button"), IconUtil.getAddLinkIcon()) {
+      AnActionButton specifyUrlButton = new DumbAwareActionButton(ProjectBundle.message("sdk.paths.specify.url.button"), IconUtil.getAddLinkIcon()) {
         @Override
         public void actionPerformed(AnActionEvent e) {
           onSpecifyUrlButtonClicked();