1 files changed, 1 insertions, 0 deletions
diff --git a/debug.c b/debug.c
index 9987c2822..4573efc65 100644
--- a/debug.c
+++ b/debug.c
@@ -4,6 +4,7 @@
 #include "openttd.h"
 #include "console.h"
 #include "debug.h"
+#include "functions.h"
 #include "string.h"
 
 int _debug_ai_level;