diff --git a/ChangeLog b/ChangeLog
index edae231c..a8026c4b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2023-11-04  Araki Ken  <arakiken@users.sf.net>
 
+	* fb/ui_font.c: Fix compiling error in ui_font_set_dpi_for_fc().
+
 	* README, RAEDME.ja: Updated.
 
 	* configure.in: Add --disable-conpty.
diff --git a/uitoolkit/fb/ui_font.c b/uitoolkit/fb/ui_font.c
index 9ebb06e2..3a889ef9 100644
--- a/uitoolkit/fb/ui_font.c
+++ b/uitoolkit/fb/ui_font.c
@@ -2804,9 +2804,11 @@ u_char *ui_get_bitmap(XFontStruct *xfont, u_char *ch, size_t len, int use_ot_lay
   return xfont->glyphs + glyph_offset;
 }
 
+#ifdef USE_WAYLAND
 /* For mlterm-libvte */
 void ui_font_set_dpi_for_fc(double dpi) {
 #ifdef USE_FONTCONFIG
   dpi_for_fc = dpi;
 #endif
 }
+#endif