diff --git a/ll-merge.c b/ll-merge.c
index 0ee34d8a01..261657578c 100644
--- a/ll-merge.c
+++ b/ll-merge.c
@@ -138,7 +138,7 @@ static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
 
 static int ll_union_merge(const struct ll_merge_driver *drv_unused,
 			  mmbuffer_t *result,
-			  const char *path_unused,
+			  const char *path,
 			  mmfile_t *orig, const char *orig_name,
 			  mmfile_t *src1, const char *name1,
 			  mmfile_t *src2, const char *name2,
@@ -150,7 +150,7 @@ static int ll_union_merge(const struct ll_merge_driver *drv_unused,
 	assert(opts);
 	o = *opts;
 	o.variant = XDL_MERGE_FAVOR_UNION;
-	return ll_xdl_merge(drv_unused, result, path_unused,
+	return ll_xdl_merge(drv_unused, result, path,
 			    orig, orig_name, src1, name1, src2, name2,
 			    &o, marker_size);
 }