diff --git a/src/Docfx.App/PdfBuilder.cs b/src/Docfx.App/PdfBuilder.cs
index 124d39b71d8..a1c4396f60f 100644
--- a/src/Docfx.App/PdfBuilder.cs
+++ b/src/Docfx.App/PdfBuilder.cs
@@ -357,6 +357,8 @@ async Task MergePdf()
                 if (!pageBytes.TryGetValue(node, out var bytes))
                     continue;
 
+                var isCoverPage = url.AbsolutePath.TrimStart('/').Equals(outline.pdfCoverPage, GetStringComparison());
+
                 var isTocPage = IsTocPage(url);
                 if (isTocPage)
                 {
@@ -375,6 +377,9 @@ async Task MergePdf()
 
                     var pageBuilder = builder.AddPage(document, i, x => CopyLink(node, x));
 
+                    if (isCoverPage)
+                        continue;
+
                     if (isTocPage)
                         continue;
 
@@ -615,4 +620,12 @@ static string getMillimeter(double pt)
             return $"{Math.Round(pt * MillimeterPerInch / Dpi)}mm";
         }
     }
+
+    // Gets StringComparison instance for path string.
+    private static StringComparison GetStringComparison()
+    {
+        return PathUtility.IsPathCaseInsensitive()
+            ? StringComparison.OrdinalIgnoreCase
+            : StringComparison.Ordinal;
+    }
 }