diff --git a/include/debug.h b/include/debug.h
index 6ced60b1..ff2845f9 100644
--- a/include/debug.h
+++ b/include/debug.h
@@ -32,7 +32,7 @@
  * Terminal colors *
  *******************/
 
-#ifndev MESSAGES_TO_STDOUT
+#ifndef MESSAGES_TO_STDOUT
 #define MESSAGES_TO_STDOUT
 #endif