diff --git a/src/unix/unix.c b/src/unix/unix.c
index 8e44cc26a..2e92a90d3 100644
--- a/src/unix/unix.c
+++ b/src/unix/unix.c
@@ -471,6 +471,12 @@ ui_sb_update_icon(UNUSED(int tag), UNUSED(int active))
     /* No-op. */
 }
 
+void
+ui_sb_update_icon_write(UNUSED(int tag), UNUSED(int active))
+{
+    /* No-op. */
+}
+
 void
 plat_delay_ms(uint32_t count)
 {