diff -up sbsigntools-0.9.5/src/sbvarsign.c.orig sbsigntools-0.9.5/src/sbvarsign.c
--- sbsigntools-0.9.5/src/sbvarsign.c.orig	2023-05-05 12:56:50.000000000 +0200
+++ sbsigntools-0.9.5/src/sbvarsign.c	2024-11-18 23:53:08.764976485 +0100
@@ -67,7 +67,7 @@ struct varsign_context {
 	uint8_t				*data;
 	size_t				data_len;
 
-	CHAR16				*var_name;
+	uint16_t			*var_name;
 	int				var_name_bytes;
 	EFI_GUID			var_guid;
 	uint32_t			var_attrs;
@@ -163,18 +163,18 @@ static uint32_t parse_attrs(const char *
 
 static int set_varname(struct varsign_context *ctx, const char *str)
 {
-	CHAR16 *wstr;
+	uint16_t *wstr;
 	int i, len;
 
 	len = strlen(str);
 
-	wstr = talloc_array(ctx, CHAR16, len);
+	wstr = talloc_array(ctx, uint16_t, len);
 
 	for (i = 0; i < len; i++)
 		wstr[i] = str[i];
 
 	ctx->var_name = wstr;
-	ctx->var_name_bytes = len * sizeof(CHAR16);
+	ctx->var_name_bytes = len * sizeof(uint16_t);
 
 	return 0;
 }