diff --git a/src/ServerController.h b/src/ServerController.h
index b71c22e..a7c8a25 100644
--- a/src/ServerController.h
+++ b/src/ServerController.h
@@ -1,5 +1,5 @@
 #ifndef CONTROLLER
-#def CONTROLLER
+#define CONTROLLER
 
 #include <sys/types.h>
 #include <sys/select.h>