diff --git a/man3/bsearch.3 b/man3/bsearch.3
index 88e0e6ea1..6859bdba2 100644
--- a/man3/bsearch.3
+++ b/man3/bsearch.3
@@ -124,12 +124,12 @@ main(int argc, char **argv)
 {
     int i;
 
-    qsort(months, nr_of_months, sizeof(struct mi), compmi);
+    qsort(months, nr_of_months, sizeof(months[0]), compmi);
     for (i = 1; i < argc; i++) {
         struct mi key, *res;
         key.name = argv[i];
         res = bsearch(&key, months, nr_of_months,
-                      sizeof(struct mi), compmi);
+                      sizeof(months[0]), compmi);
         if (res == NULL)
             printf("\(aq%s\(aq: unknown month\en", argv[i]);
         else