diff --git a/src/NuGet.Core/NuGet.Packaging/PackageCreation/Authoring/PackageBuilder.cs b/src/NuGet.Core/NuGet.Packaging/PackageCreation/Authoring/PackageBuilder.cs
index ce544c103bd..71200307f6b 100644
--- a/src/NuGet.Core/NuGet.Packaging/PackageCreation/Authoring/PackageBuilder.cs
+++ b/src/NuGet.Core/NuGet.Packaging/PackageCreation/Authoring/PackageBuilder.cs
@@ -1104,7 +1104,7 @@ public void AddFiles(string basePath, string source, string destination, string
             exclude = exclude?.Replace('\\', Path.DirectorySeparatorChar);
 
             // Ensure that the 'source' path uses only the OS-specific directory separating character
-            List<PhysicalPackageFile> searchFiles = ResolveSearchPattern(basePath, source.Replace('\\', Path.DirectorySeparatorChar).Replace('/', Path.DirectorySeparatorChar), destination, _includeEmptyDirectories).ToList();
+            List<PhysicalPackageFile> searchFiles = ResolveSearchPattern(basePath, source.Replace('\\', Path.DirectorySeparatorChar), destination, _includeEmptyDirectories).ToList();
 
             if (_includeEmptyDirectories)
             {