diff --git a/doc/fixes34.1 b/doc/fixes34.1
index 061df06e5..26800ebaf 100644
--- a/doc/fixes34.1
+++ b/doc/fixes34.1
@@ -26,3 +26,4 @@ win32gui: make error() work; it was essentially non-operative in 3.4.0
 win32tty: honour the use_inverse option and default to ATR_BOLD if disabled
 X11: restore support for non-square tiles when USE_XPM is defined
 Gnome: add support for non-square tiles
+tty: remove #define DEBUG that forced debug behavior in production builds
diff --git a/win/tty/wintty.c b/win/tty/wintty.c
index 4d2d4df7d..8dc0dfb6d 100644
--- a/win/tty/wintty.c
+++ b/win/tty/wintty.c
@@ -38,8 +38,6 @@ extern void msmsg(const char *,...);
 # endif
 #endif
 
-#define DEBUG
-
 extern char mapped_menu_cmds[]; /* from options.c */
 
 /* Interface definition, for windows.c */