diff --git a/src/boot/efi/measure.c b/src/boot/efi/measure.c
index a8bbc62eaa..949e26350c 100644
--- a/src/boot/efi/measure.c
+++ b/src/boot/efi/measure.c
@@ -146,7 +146,7 @@ EFI_STATUS tpm_log_event(uint32_t pcrindex, EFI_PHYSICAL_ADDRESS buffer, size_t
         EFI_TCG2 *tpm2;
         EFI_STATUS err;
 
-        assert(description);
+        assert(description || pcrindex == UINT32_MAX);
 
         /* If EFI_SUCCESS is returned, will initialize ret_measured to true if we actually measured
          * something, or false if measurement was turned off. */