diff --git a/tools/binman/etype/efi_capsule.py b/tools/binman/etype/efi_capsule.py
index 9f06cc88e6e..3b30c12ea51 100644
--- a/tools/binman/etype/efi_capsule.py
+++ b/tools/binman/etype/efi_capsule.py
@@ -125,10 +125,14 @@ class Entry_efi_capsule(Entry_section):
         private_key = ''
         public_key_cert = ''
         if self.auth:
-            if not os.path.isabs(self.private_key):
+            if not os.path.isabs(self.private_key) and not 'pkcs11:' in self.private_key:
                 private_key =  tools.get_input_filename(self.private_key)
-            if not os.path.isabs(self.public_key_cert):
+            if not os.path.isabs(self.public_key_cert) and not 'pkcs11:' in self.public_key_cert:
                 public_key_cert = tools.get_input_filename(self.public_key_cert)
+            if 'pkcs11:' in self.private_key:
+                private_key = self.private_key
+            if 'pkcs11:' in self.public_key_cert:
+                public_key_cert = self.public_key_cert
         data, payload, uniq = self.collect_contents_to_file(
             self._entries.values(), 'capsule_in')
         outfile = self._filename if self._filename else 'capsule.%s' % uniq