diff --git a/csi.c b/csi.c
index 61e0e44b..35a39f82 100644
--- a/csi.c
+++ b/csi.c
@@ -1249,6 +1249,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
             case 8: LOG_WARN("unimplemented: resize window in chars"); break;
             case 9: LOG_WARN("unimplemented: maximize/unmaximize window"); break;
             case 10: LOG_WARN("unimplemented: to/from full screen"); break;
+            case 20: LOG_WARN("unimplemented: report icon label"); break;
             case 24: LOG_WARN("unimplemented: resize window (DECSLPP)"); break;
 
             case 11:   /* report if window is iconified */
@@ -1352,16 +1353,6 @@ csi_dispatch(struct terminal *term, uint8_t final)
                 break;
             }
 
-            case 20: {
-                const char *icon = term_icon(term);
-
-                char reply[3 + strlen(icon) + 2 + 1];
-                int chars = xsnprintf(
-                    reply, sizeof(reply), "\033]L%s\033\\", icon);
-                term_to_slave(term, reply, chars);
-                break;
-            }
-
             case 21: {
                 char reply[3 + strlen(term->window_title) + 2 + 1];
                 int chars = xsnprintf(