diff --git a/src/vim9execute.c b/src/vim9execute.c
index 5fab27d..311baca 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -174,7 +174,7 @@
 dict_stack_save(typval_T *tv)
 {
     if (dict_stack.ga_growsize == 0)
-	ga_init2(&dict_stack, (int)sizeof(typval_T), 10);
+	ga_init2(&dict_stack, sizeof(typval_T), 10);
     if (ga_grow(&dict_stack, 1) == FAIL)
 	return FAIL;
     ((typval_T *)dict_stack.ga_data)[dict_stack.ga_len] = *tv;