diff --git a/libobs/util/darray.h b/libobs/util/darray.h
index 6faa948a7..eb75410ad 100644
--- a/libobs/util/darray.h
+++ b/libobs/util/darray.h
@@ -284,7 +284,7 @@ static inline void darray_insert_array(const size_t element_size,
 
 	assert(array != NULL);
 	assert(num != 0);
-	assert(idx < dst->num);
+	assert(idx <= dst->num);
 
 	old_num = dst->num;
 	darray_resize(element_size, dst, dst->num + num);