diff --git a/database.h b/database.h
index 40ae4f9..cce3f6d 100644
--- a/database.h
+++ b/database.h
@@ -14,6 +14,10 @@
 #include "dateNtime.h"
 #endif // !DNT_H
 //linked list
+#ifndef linkely
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+#endif
 typedef struct linkedlist{
     struct linkedlist* next;
     struct linkedlist* prev;
@@ -125,7 +129,7 @@ bool is_admin(char* role){
     }
     char line[100];
     while(fgets(line,100,fp) != NULL){
-        if(line[0] == '#') continue;
+        if(unlikely(line[0] == '#')) continue;
 
         while(line[strlen(line)-1] == '\n' || (int)line[strlen(line)-1] == 13)
             line[strlen(line)-1] = '\0';