diff --git a/src/NuGetGallery/Services/ReportPackageRequest.cs b/src/NuGetGallery/Services/ReportPackageRequest.cs
index c6bba8b160..d390b10e02 100644
--- a/src/NuGetGallery/Services/ReportPackageRequest.cs
+++ b/src/NuGetGallery/Services/ReportPackageRequest.cs
@@ -64,6 +64,10 @@ private static void Substitute(StringBuilder src, string input, string replaceme
 
         private static string Escape(string s)
         {
+            if (string.IsNullOrEmpty(s))
+            {
+                return string.Empty;
+            }
             return s.Replace("{", @"\{\");
         }
     }