diff --git a/EmbeddedPkg/EmbeddedPkg.dsc b/EmbeddedPkg/EmbeddedPkg.dsc
index 8844f8e..3f737b8 100644
--- a/EmbeddedPkg/EmbeddedPkg.dsc
+++ b/EmbeddedPkg/EmbeddedPkg.dsc
@@ -246,6 +246,7 @@
   EmbeddedPkg/Library/PrePiExtractGuidedSectionLib/PrePiExtractGuidedSectionLib.inf
   EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
   EmbeddedPkg/Library/TemplateSerialPortLib/TemplateSerialPortLib.inf
+  EmbeddedPkg/Library/SerialPortExtLibNull/SerialPortExtLibNull.inf
   EmbeddedPkg/Library/TemplateResetSystemLib/TemplateResetSystemLib.inf
   EmbeddedPkg/Library/TemplateRealTimeClockLib/TemplateRealTimeClockLib.inf
   EmbeddedPkg/Library/LzmaHobCustomDecompressLib/LzmaHobCustomDecompressLib.inf