diff --git a/src/main/c/hangman.c b/src/main/c/hangman.c
index 9ffe61a..3591d46 100644
--- a/src/main/c/hangman.c
+++ b/src/main/c/hangman.c
@@ -2,4 +2,8 @@
 #include <string.h>
 #include <stdlib.h>
 #include <ctype.h>
-#include <unistd.h>
\ No newline at end of file
+#include <unistd.h>
+
+void protokoll();
+
+void protokoll(){}
\ No newline at end of file