diff --git a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
index 121d6f5171d6..ac5ce7f87890 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationComponent.java
@@ -46,10 +46,7 @@ import com.intellij.ui.popup.AbstractPopup;
 import com.intellij.util.Url;
 import com.intellij.util.Urls;
 import com.intellij.util.containers.HashMap;
-import com.intellij.util.ui.GraphicsUtil;
-import com.intellij.util.ui.JBDimension;
-import com.intellij.util.ui.JBUI;
-import com.intellij.util.ui.UIUtil;
+import com.intellij.util.ui.*;
 import com.intellij.util.ui.accessibility.AccessibleContextUtil;
 import com.intellij.util.ui.accessibility.ScreenReader;
 import org.jetbrains.annotations.NonNls;
@@ -258,8 +255,10 @@ public class DocumentationComponent extends JPanel implements Disposable, DataPr
     myEditorPane.setBackground(EditorColorsUtil.getGlobalOrDefaultColor(COLOR_KEY));
     HTMLEditorKit editorKit = UIUtil.getHTMLEditorKit(false);
     String editorFontName = StringUtil.escapeQuotes(EditorColorsManager.getInstance().getGlobalScheme().getEditorFontName());
-    editorKit.getStyleSheet().addRule("code {font-family:\"" + editorFontName + "\"}");
-    editorKit.getStyleSheet().addRule("pre {font-family:\"" + editorFontName + "\"}");
+    if (isMonospacedFont(editorFontName)) {
+      editorKit.getStyleSheet().addRule("code {font-family:\"" + editorFontName + "\"}");
+      editorKit.getStyleSheet().addRule("pre {font-family:\"" + editorFontName + "\"}");
+    }
     myEditorPane.setEditorKit(editorKit);
     myScrollPane = new JBScrollPane(myEditorPane) {
       @Override
@@ -451,6 +450,10 @@ public class DocumentationComponent extends JPanel implements Disposable, DataPr
     updateControlState();
   }
 
+  private static boolean isMonospacedFont(String fontName) {
+    return FontInfo.isMonospaced(new Font(fontName, Font.PLAIN, 12));
+  }
+
   public DocumentationComponent(final DocumentationManager manager) {
     this(manager, null);
   }
diff --git a/platform/util/src/com/intellij/util/ui/FontInfo.java b/platform/util/src/com/intellij/util/ui/FontInfo.java
index 9a5a97724778..ef2bca8837ad 100644
--- a/platform/util/src/com/intellij/util/ui/FontInfo.java
+++ b/platform/util/src/com/intellij/util/ui/FontInfo.java
@@ -1,18 +1,4 @@
-/*
- * Copyright 2000-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.util.ui;
 
 import java.awt.*;
@@ -208,6 +194,10 @@ public final class FontInfo {
     return width == getCharWidth(font, 'l') && width == getCharWidth(font, 'W') ? width : 0;
   }
 
+  public static boolean isMonospaced(Font font) {
+    return getFontWidth(font, Font.PLAIN) > 0;
+  }
+
   private static int getCharWidth(Font font, char ch) {
     if (font.canDisplay(ch)) {
       Rectangle bounds = font.getStringBounds(new char[]{ch}, 0, 1, DEFAULT_CONTEXT).getBounds();