diff --git a/du5/a_station.c b/du5/a_station.c
index 6e4929c..ed6a3fc 100644
--- a/du5/a_station.c
+++ b/du5/a_station.c
@@ -70,8 +70,7 @@ void add_target_capacity(struct station* station,const char* target, int capacit
 
 
    }
-   int new_cap = ptr->capacity + capacity;
-   ptr->capacity = new_cap;
+   ptr->capacity += capacity;
    return;