diff --git a/SignedCapsulePkg/Library/EdkiiSystemCapsuleLib/EdkiiSystemCapsuleLib.c b/SignedCapsulePkg/Library/EdkiiSystemCapsuleLib/EdkiiSystemCapsuleLib.c
index 27c6f4c0b4..18205519bf 100644
--- a/SignedCapsulePkg/Library/EdkiiSystemCapsuleLib/EdkiiSystemCapsuleLib.c
+++ b/SignedCapsulePkg/Library/EdkiiSystemCapsuleLib/EdkiiSystemCapsuleLib.c
@@ -415,6 +415,8 @@ ExtractAuthenticatedImage (
   } else {
     return FALSE;
   }
+  ASSERT (PublicKeyData != NULL);
+  ASSERT (PublicKeyDataLength != 0);
 
   Status = AuthenticateFmpImage(
              ImageAuth,