diff --git a/src/document/document.h b/src/document/document.h
index 43b350fb..b0d83a9e 100644
--- a/src/document/document.h
+++ b/src/document/document.h
@@ -150,6 +150,7 @@ struct timeout_data {
 	struct ecmascript_interpreter *interpreter;
 	unsigned char *code;
 	timer_id_T timer;
+	void *object;
 };
 #endif
 
diff --git a/src/ecmascript/ecmascript.c b/src/ecmascript/ecmascript.c
index 99315fa9..84c91147 100644
--- a/src/ecmascript/ecmascript.c
+++ b/src/ecmascript/ecmascript.c
@@ -333,12 +333,13 @@ ecmascript_timeout_handler(void *i)
 	assertm(interpreter->vs->doc_view != NULL,
 		"setTimeout: vs with no document (e_f %d)",
 		interpreter->vs->ecmascript_fragile);
-	del_from_list(td);
 	{
 		struct string code = INIT_STRING(td->code, strlen(td->code));
 
+		ecmascript_clear_timeout2(td);
 		ecmascript_eval(interpreter, &code, NULL);
 	}
+	del_from_list(td);
 	mem_free(td->code);
 	mem_free(td);
 }
diff --git a/src/ecmascript/ecmascript.h b/src/ecmascript/ecmascript.h
index 69e6e2ed..00515fa0 100644
--- a/src/ecmascript/ecmascript.h
+++ b/src/ecmascript/ecmascript.h
@@ -87,7 +87,8 @@ void ecmascript_timeout_dialog(struct terminal *term, int max_exec_time);
 void ecmascript_set_action(unsigned char **action, unsigned char *string);
 
 struct timeout_data *ecmascript_set_timeout(struct ecmascript_interpreter *interpreter, unsigned char *code, int timeout);
-void ecmascript_clear_timeout(struct timeout_data *td);
+void ecmascript_clear_timeout(struct timeout_data *td); /* the same for both SpiderMonkey and SEE */
+void ecmascript_clear_timeout2(struct timeout_data *td); /* engine dependent */
 
 extern struct module ecmascript_module;
 
diff --git a/src/ecmascript/see/window.c b/src/ecmascript/see/window.c
index 3a30e63a..42df8ebe 100644
--- a/src/ecmascript/see/window.c
+++ b/src/ecmascript/see/window.c
@@ -350,6 +350,17 @@ end:
 	done_uri(uri);
 }
 
+void
+ecmascript_clear_timeout2(struct timeout_data *td)
+{
+	struct timeout_class *timer = td->object;
+
+	if (timer) {
+		timer->td = NULL;
+		td->object = NULL;
+	}
+}
+
 static void
 js_clearTimeout(struct SEE_interpreter *interp, struct SEE_object *self,
 	      struct SEE_object *thisobj, int argc, struct SEE_value **argv,
@@ -360,7 +371,7 @@ js_clearTimeout(struct SEE_interpreter *interp, struct SEE_object *self,
 	if (argc != 1) return;
 	timer = (struct timeout_class *)argv[0]->u.object;
 	see_check_class(interp, (struct SEE_object *)timer, &js_timeout_object_class);
-	ecmascript_clear_timeout(timer->td);
+	if (timer && timer->td) ecmascript_clear_timeout(timer->td);
 	
 }
 
@@ -384,9 +395,12 @@ js_setTimeout(struct SEE_interpreter *interp, struct SEE_object *self,
 	timeout = SEE_ToInt32(interp, argv[1]);
 	td = ecmascript_set_timeout(ei, code, timeout);
 	timer = SEE_NEW(interp, struct timeout_class);
-	timer->object.objectclass = &js_timeout_object_class;
-	timer->object.Prototype = NULL;
-	timer->td = td;
+	if (timer) {
+		timer->object.objectclass = &js_timeout_object_class;
+		timer->object.Prototype = NULL;
+		timer->td = td;
+		td->object = timer;
+	}
 	SEE_SET_OBJECT(res, (struct SEE_object *)timer);
 }
 
diff --git a/src/ecmascript/spidermonkey/window.c b/src/ecmascript/spidermonkey/window.c
index fda29101..94227445 100644
--- a/src/ecmascript/spidermonkey/window.c
+++ b/src/ecmascript/spidermonkey/window.c
@@ -448,18 +448,31 @@ end:
 static JSBool
 window_clearTimeout(JSContext *ctx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
-	JSObject *timeout;
+	JSObject *timer;
 	struct timeout_data *td;
 
 	if (argc != 1)
 		return JS_TRUE;
-	timeout = JSVAL_TO_OBJECT(argv[0]);
-	if (!JS_InstanceOf(ctx, timeout, (JSClass *) &timeout_class, NULL)) return JS_FALSE;
-	td = JS_GetPrivate(ctx, timeout);
-	ecmascript_clear_timeout(td);
+	timer = JSVAL_TO_OBJECT(argv[0]);
+	if (!JS_InstanceOf(ctx, timer, (JSClass *) &timeout_class, NULL)) return JS_FALSE;
+	td = JS_GetPrivate(ctx, timer);
+	if (td)	ecmascript_clear_timeout(td);
 	return JS_TRUE;
 }
 
+void
+ecmascript_clear_timeout2(struct timeout_data *td)
+{
+	struct ecmascript_interpreter *interpreter = td->interpreter;
+	JSContext *ctx = interpreter->backend_data;
+	JSObject *timer = td->object;
+
+	if (timer) {
+		JS_SetPrivate(ctx, timer, NULL);
+		td->object = NULL;
+	}
+}
+
 /* @window_funcs{"setTimeout"} */
 static JSBool
 window_setTimeout(JSContext *ctx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
@@ -487,7 +500,10 @@ window_setTimeout(JSContext *ctx, JSObject *obj, uintN argc, jsval *argv, jsval
 	}
 	td = ecmascript_set_timeout(interpreter, code, timeout);
 	timer = JS_NewObject(ctx, (JSClass *)&timeout_class, NULL, NULL);
-	JS_SetPrivate(ctx, timer, td);
+	if (timer) {
+		JS_SetPrivate(ctx, timer, td);
+		td->object = timer;
+	}
 	object_to_jsval(ctx, rval, timer);
 	return JS_TRUE;
 }