diff --git a/stack.c b/stack.c
index d9e4013..e351223 100644
--- a/stack.c
+++ b/stack.c
@@ -31,16 +31,11 @@ StackNode *push(StackNode *stack, void *data)
 // freed by caller.)
 StackNode *pop(StackNode *stack)
 {
-    if(stack)
-      {
-          StackNode *t = stack->next; //Naechstes Element im Stack wird erstes Element
-          free(stack);
-          return t;
-      }
-      else
+    if(stack == NULL)
       {
         return NULL;
       }
+    return stack->next;
 }
 
 // Returns the data of the top element.
diff --git a/test_stack.exe b/test_stack.exe
new file mode 100644
index 0000000..ebcff7e
Binary files /dev/null and b/test_stack.exe differ