diff --git a/src/.DS_Store b/src/.DS_Store
new file mode 100644
index 000000000..f331cdebb
Binary files /dev/null and b/src/.DS_Store differ
diff --git a/src/automate.c b/src/automate.c
index ec4ea83d8..a74cf770b 100644
--- a/src/automate.c
+++ b/src/automate.c
@@ -62,13 +62,13 @@ int autostudy_init(scholar scholars[], int max_scholars, region *r)
 static void teaching(scholar *s, int n) {
     assert(n <= s->u->number);
     s->learn += n;
-    fset(s->u, UFL_LONGACTION);
+    s->u->flags |= UFL_LONGACTION;
 }
 
 static void learning(scholar *s, int n) {
     assert(n <= s->u->number);
     s->learn += n;
-    fset(s->u, UFL_LONGACTION);
+    s->u->flags |= UFL_LONGACTION;
 }
 
 void autostudy_run(scholar scholars[], int nscholars)
diff --git a/src/util/.DS_Store b/src/util/.DS_Store
new file mode 100644
index 000000000..5008ddfcf
Binary files /dev/null and b/src/util/.DS_Store differ