diff --git a/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPass.java b/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPass.java
index 2a1f5bbc0fdb..f99cc91b34e7 100644
--- a/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPass.java
+++ b/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPass.java
@@ -24,6 +24,7 @@ import com.intellij.lang.ASTNode;
 import com.intellij.lang.Language;
 import com.intellij.lang.annotation.HighlightSeverity;
 import com.intellij.lang.xml.XMLLanguage;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.editor.colors.ColorKey;
 import com.intellij.openapi.editor.colors.EditorColorsManager;
@@ -67,6 +68,10 @@ public class HtmlTagTreeHighlightingPass extends TextEditorHighlightingPass {
 
   @Override
   public void doCollectInformation(ProgressIndicator progress) {
+    if (ApplicationManager.getApplication().isUnitTestMode()) {
+      return;
+    }
+
     if (!WebEditorOptions.getInstance().isTagTreeHighlightingEnabled()) {
       return;
     }
diff --git a/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPassFactory.java b/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPassFactory.java
index dd1bc7d94c4b..b1d46c614fb2 100644
--- a/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPassFactory.java
+++ b/xml/impl/src/com/intellij/codeInsight/daemon/impl/tagTreeHighlighting/HtmlTagTreeHighlightingPassFactory.java
@@ -20,6 +20,7 @@ import com.intellij.codeHighlighting.Pass;
 import com.intellij.codeHighlighting.TextEditorHighlightingPass;
 import com.intellij.codeHighlighting.TextEditorHighlightingPassFactory;
 import com.intellij.codeHighlighting.TextEditorHighlightingPassRegistrar;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.AbstractProjectComponent;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.project.Project;
@@ -39,6 +40,10 @@ public class HtmlTagTreeHighlightingPassFactory extends AbstractProjectComponent
   }
 
   public TextEditorHighlightingPass createHighlightingPass(@NotNull final PsiFile file, @NotNull final Editor editor) {
+    if (ApplicationManager.getApplication().isUnitTestMode()) {
+      return null;
+    }
+
     if (editor.isOneLineMode()) return null;
 
     if (!(file instanceof XmlFile) || !HtmlUtil.hasHtml(file)) {