diff --git a/firmware/lib/tpm_lite/mocked_tlcl.c b/firmware/lib/tpm_lite/mocked_tlcl.c
index 5c9c4cbd4c..e977cd5d09 100644
--- a/firmware/lib/tpm_lite/mocked_tlcl.c
+++ b/firmware/lib/tpm_lite/mocked_tlcl.c
@@ -12,6 +12,10 @@ uint32_t TlclLibInit(void) {
   return VbExTpmInit();
 }
 
+uint32_t TlclLibClose(void) {
+  return TPM_SUCCESS;
+}
+
 uint32_t TlclStartup(void) {
   return TPM_SUCCESS;
 }