diff --git a/hsmd/libhsmd.c b/hsmd/libhsmd.c
index dd2329236..53988bf03 100644
--- a/hsmd/libhsmd.c
+++ b/hsmd/libhsmd.c
@@ -1820,12 +1820,16 @@ static u8 *handle_sign_anchorspend(struct hsmd_client *c, const u8 *msg_in)
 				    fmt_pubkey(tmpctx, &local_funding_pubkey),
 				    fmt_wally_psbt(tmpctx, psbt));
 	}
-	if (dev_warn_on_overgrind
-	    && psbt->inputs[0].signatures.num_items == 1
-	    && psbt->inputs[0].signatures.items[0].value_len < 71) {
-		hsmd_status_fmt(LOG_BROKEN, NULL,
-				"overgrind: short signature length %zu",
-				psbt->inputs[0].signatures.items[0].value_len);
+
+	if (dev_warn_on_overgrind) {
+		for (size_t i = 0; i < psbt->num_inputs; i++) {
+			if (psbt->inputs[i].signatures.num_items == 1
+			    && psbt->inputs[i].signatures.items[0].value_len < 71) {
+				hsmd_status_fmt(LOG_BROKEN, NULL,
+						"overgrind: short signature length %zu",
+						psbt->inputs[i].signatures.items[0].value_len);
+			}
+		}
 	}
 
 	return towire_hsmd_sign_anchorspend_reply(NULL, psbt);