diff --git a/xml/impl/src/com/intellij/codeInsight/daemon/impl/analysis/AddSchemaPrefixIntention.java b/xml/impl/src/com/intellij/codeInsight/daemon/impl/analysis/AddSchemaPrefixIntention.java
index 0f44f2b29d5a..8f27e4433d13 100644
--- a/xml/impl/src/com/intellij/codeInsight/daemon/impl/analysis/AddSchemaPrefixIntention.java
+++ b/xml/impl/src/com/intellij/codeInsight/daemon/impl/analysis/AddSchemaPrefixIntention.java
@@ -57,6 +57,11 @@ public class AddSchemaPrefixIntention extends PsiElementBaseIntentionAction {
     return NAME;
   }
 
+  @Override
+  public boolean startInWriteAction() {
+    return false;
+  }
+
   @Override
   public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element) throws IncorrectOperationException {
     final XmlAttribute xmlns = getXmlnsDeclaration(element);