diff --git a/kitty/child-monitor.c b/kitty/child-monitor.c
index f308b842f..171f045c4 100644
--- a/kitty/child-monitor.c
+++ b/kitty/child-monitor.c
@@ -245,7 +245,6 @@ schedule_write_to_child(unsigned long id, unsigned int num, ...) {
     children_mutex(lock);
     for (size_t i = 0; i < self->count; i++) {
         if (children[i].id == id) {
-            found = true;
             Screen *screen = children[i].screen;
             screen_mutex(lock, write);
             size_t space_left = screen->write_buf_sz - screen->write_buf_used;
@@ -259,6 +258,7 @@ schedule_write_to_child(unsigned long id, unsigned int num, ...) {
                 screen->write_buf = PyMem_RawRealloc(screen->write_buf, screen->write_buf_sz);
                 if (screen->write_buf == NULL) { fatal("Out of memory."); }
             }
+            found = true;
             va_start(ap, num);
             for (unsigned int i = 0; i < num; i++) {
                 data = va_arg(ap, const char*);
diff --git a/kitty/fast_data_types.pyi b/kitty/fast_data_types.pyi
index 8fe8ee52c..38ce71272 100644
--- a/kitty/fast_data_types.pyi
+++ b/kitty/fast_data_types.pyi
@@ -992,7 +992,7 @@ class Screen:
     def resize(self, width: int, height: int) -> None:
         pass
 
-    def send_escape_code_to_child(self, code: int, text: str) -> None:
+    def send_escape_code_to_child(self, code: int, text: str) -> bool:
         pass
 
     def reset_callbacks(self) -> None:
diff --git a/kitty/screen.c b/kitty/screen.c
index c531346e5..832a90408 100644
--- a/kitty/screen.c
+++ b/kitty/screen.c
@@ -755,14 +755,17 @@ write_to_test_child(Screen *self, const char *data, size_t sz) {
     PyObject *r = PyObject_CallMethod(self->test_child, "write", "y#", data, sz); if (r == NULL) PyErr_Print(); Py_CLEAR(r);
 }
 
-static void
+static bool
 write_to_child(Screen *self, const char *data, size_t sz) {
-    if (self->window_id) schedule_write_to_child(self->window_id, 1, data, sz);
+    bool written = false;
+    if (self->window_id) written = schedule_write_to_child(self->window_id, 1, data, sz);
     if (self->test_child != Py_None) { write_to_test_child(self, data, sz); }
+    return written;
 }
 
-void
+bool
 write_escape_code_to_child(Screen *self, unsigned char which, const char *data) {
+    bool written = false;
     const char *prefix, *suffix = self->modes.eight_bit_controls ? "\x9c" : "\033\\";
     switch(which) {
         case DCS:
@@ -785,9 +788,9 @@ write_escape_code_to_child(Screen *self, unsigned char which, const char *data)
     }
     if (self->window_id) {
         if (suffix[0]) {
-            schedule_write_to_child(self->window_id, 3, prefix, strlen(prefix), data, strlen(data), suffix, strlen(suffix));
+            written = schedule_write_to_child(self->window_id, 3, prefix, strlen(prefix), data, strlen(data), suffix, strlen(suffix));
         } else {
-            schedule_write_to_child(self->window_id, 2, prefix, strlen(prefix), data, strlen(data));
+            written = schedule_write_to_child(self->window_id, 2, prefix, strlen(prefix), data, strlen(data));
         }
     }
     if (self->test_child != Py_None) {
@@ -795,6 +798,7 @@ write_escape_code_to_child(Screen *self, unsigned char which, const char *data)
         write_to_test_child(self, data, strlen(data));
         if (suffix[0]) write_to_test_child(self, suffix, strlen(suffix));
     }
+    return written;
 }
 
 static bool
@@ -3162,8 +3166,8 @@ send_escape_code_to_child(Screen *self, PyObject *args) {
     int code;
     char *text;
     if (!PyArg_ParseTuple(args, "is", &code, &text)) return NULL;
-    write_escape_code_to_child(self, code, text);
-    Py_RETURN_NONE;
+    if (write_escape_code_to_child(self, code, text)) Py_RETURN_TRUE;
+    Py_RETURN_FALSE;
 }
 
 static void
diff --git a/kitty/screen.h b/kitty/screen.h
index c705aad94..b9cce1131 100644
--- a/kitty/screen.h
+++ b/kitty/screen.h
@@ -144,7 +144,7 @@ void screen_restore_cursor(Screen *);
 void screen_save_cursor(Screen *);
 void screen_restore_modes(Screen *);
 void screen_save_modes(Screen *);
-void write_escape_code_to_child(Screen *self, unsigned char which, const char *data);
+bool write_escape_code_to_child(Screen *self, unsigned char which, const char *data);
 void screen_cursor_position(Screen*, unsigned int, unsigned int);
 void screen_cursor_back(Screen *self, unsigned int count/*=1*/, int move_direction/*=-1*/);
 void screen_erase_in_line(Screen *, unsigned int, bool);