diff --git a/src/scheduler.c b/src/scheduler.c
index fa659a5..0fe8630 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -50,25 +50,20 @@ static inline void centerAssign(Center_t *center, int x, int y, int z)
 
 static inline Center_t *centerAdd(Center_t *anyCenter, Center_t *newCenter)
 {
-    Center_t *temp = anyCenter->next;
-    anyCenter->next = newCenter;
-    newCenter->next = temp;
-    newCenter->prev = anyCenter;
-
-    if (temp) {
-        temp->prev = newCenter;
+    if (anyCenter->next) {
+        anyCenter->next->prev = newCenter;
     }
+    newCenter->next = anyCenter->next;
+    anyCenter->next = newCenter;
+    newCenter->prev = anyCenter;
 
     return newCenter;
 }
 
 static inline void centerRemove(Center_t *oldCenter)
 {
-    Center_t *prev = oldCenter->prev;
-    Center_t *next = oldCenter->next;
-
-    prev->next = next->prev;
-    next->prev = prev->next;
+    oldCenter->prev->next = oldCenter->next;
+    oldCenter->next->prev = oldCenter->prev;
 
     free(oldCenter);
 }