diff --git a/src/_macosx.m b/src/_macosx.m
index 50556c017b49..8f44f1eb0c54 100644
--- a/src/_macosx.m
+++ b/src/_macosx.m
@@ -1307,7 +1307,9 @@ -(void)save_figure:(id)sender
     }
     Py_ssize_t list_index = 0;
     PyObject* list = PyList_New(m);
-    for (size_t state_index = 0; state_index < n; state_index++)
+
+    size_t state_index;
+    for (state_index = 0; state_index < n; state_index++)
     {
         if(states[state_index]==1)
         {