diff --git a/stack.c b/stack.c
index 834f1c4173f65342b10a3692b79e3507f6a0b954..1813ff5cc17b36696b9dfd7428b8bf61d280b32e 100644
--- a/stack.c
+++ b/stack.c
@@ -7,7 +7,6 @@
 
 void stack_init(stack *s)
 {
-    assert(s->data!=NULL && "Error : stack already in memory");
     s->top = -1;
     s->capacity = DEFAULT_CAPACITY;
     s->data = malloc(sizeof(int) * DEFAULT_CAPACITY);