diff --git a/src/boot/measure.c b/src/boot/measure.c
index 3c51998d1b..cf3d4254b8 100644
--- a/src/boot/measure.c
+++ b/src/boot/measure.c
@@ -312,7 +312,8 @@ EFI_STATUS tpm_log_tagged_event(
         if (err != EFI_SUCCESS)
                 return err;
 
-        *ret_measured = true;
+        if (ret_measured)
+                *ret_measured = true;
         return EFI_SUCCESS;
 }