diff --git a/EmulatorPkg/EmulatorPkg.dsc b/EmulatorPkg/EmulatorPkg.dsc
index 6bd8ed8386..a7ded49000 100644
--- a/EmulatorPkg/EmulatorPkg.dsc
+++ b/EmulatorPkg/EmulatorPkg.dsc
@@ -454,6 +454,7 @@
       NULL|ShellPkg/Library/UefiShellInstall1CommandsLib/UefiShellInstall1CommandsLib.inf
       NULL|ShellPkg/Library/UefiShellNetwork1CommandsLib/UefiShellNetwork1CommandsLib.inf
       HandleParsingLib|ShellPkg/Library/UefiHandleParsingLib/UefiHandleParsingLib.inf
+      OrderedCollectionLib|MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.inf
       SortLib|MdeModulePkg/Library/UefiSortLib/UefiSortLib.inf
       PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
 #      SafeBlockIoLib|ShellPkg/Library/SafeBlockIoLib/SafeBlockIoLib.inf