diff --git a/fuzzterm.c b/fuzzterm.c
index 0da3b68d..21e7b12a 100644
--- a/fuzzterm.c
+++ b/fuzzterm.c
@@ -97,6 +97,7 @@ int is_iconic(void *frontend) { return 0; }
 void get_window_pos(void *frontend, int *x, int *y) { *x = 0; *y = 0; }
 void get_window_pixels(void *frontend, int *x, int *y) { *x = 0; *y = 0; }
 char *get_window_title(void *frontend, int icon) { return "moo"; }
+int frontend_is_utf8(void *frontend) { return TRUE; }
 
 /* needed by timing.c */
 void timer_change_notify(unsigned long next) { }
diff --git a/windows/window.c b/windows/window.c
index b1530dbc..290e6a31 100644
--- a/windows/window.c
+++ b/windows/window.c
@@ -229,6 +229,11 @@ void frontend_echoedit_update(void *frontend, int echo, int edit)
 {
 }
 
+int frontend_is_utf8(void *frontend)
+{
+    return ucsdata.line_codepage == CP_UTF8;
+}
+
 char *get_ttymode(void *frontend, const char *mode)
 {
     return term_get_ttymode(term, mode);