diff --git a/src/ServerController.h b/src/ServerController.h
index 71df49b..b71c22e 100644
--- a/src/ServerController.h
+++ b/src/ServerController.h
@@ -1,4 +1,5 @@
 #ifndef CONTROLLER
+#def CONTROLLER
 
 #include <sys/types.h>
 #include <sys/select.h>
@@ -13,4 +14,4 @@
 #include <signal.h>
 #include <stdlib.h>
 
-#endif
\ No newline at end of file
+#endif