diff --git a/src/Core/NETPortable/NetPortableProfileTable.cs b/src/Core/NETPortable/NetPortableProfileTable.cs
index 0d44776f5..b31c8de14 100644
--- a/src/Core/NETPortable/NetPortableProfileTable.cs
+++ b/src/Core/NETPortable/NetPortableProfileTable.cs
@@ -158,7 +158,7 @@ private static NetPortableProfileCollection BuildPortableProfileCollection()
             {
                 foreach (string versionDir in Directory.EnumerateDirectories(portableRootDirectory, "v*", SearchOption.TopDirectoryOnly))
                 {
-                    string profileFilesPath = versionDir + @"\Profile\";
+                    string profileFilesPath = Path.Combine(versionDir, @"Profile");
                     profileCollection.AddRange(LoadProfilesFromFramework(versionDir, profileFilesPath));
                 }
             }