diff --git a/tests/UI_button.cpp b/tests/UI_button.cpp
index 45dd74a..26fcf73 100644
--- a/tests/UI_button.cpp
+++ b/tests/UI_button.cpp
@@ -3,10 +3,9 @@
 
 TEST(UI_button, to_from_json)
 {
-    UI_button button("button_id", "button_text", Color(255, 255, 255), Color(0, 0, 0), nullptr);
-    json j = button.to_json();
+    UI_button button("button_text", Color(255, 255, 255), Color(0, 0, 0), nullptr);
+    json j = button.to_json(0);
     UI_button button2(j);
-    EXPECT_EQ(button.id(), button2.id());
     EXPECT_EQ(button.text(), button2.text());
     EXPECT_EQ(button.fg_color(), button2.fg_color());
     EXPECT_EQ(button.bg_color(), button2.bg_color());
diff --git a/tests/UI_checkbox.cpp b/tests/UI_checkbox.cpp
index 4ae8f9f..f5257f1 100644
--- a/tests/UI_checkbox.cpp
+++ b/tests/UI_checkbox.cpp
@@ -2,10 +2,9 @@
 
 TEST(UI_checkbox, to_from_json)
 {
-    UI_checkbox checkbox("checkbox_id", "checkbox_text", Color(255, 255, 255), Color(0, 0, 0), {"option1", "option2"});
-    json j = checkbox.to_json();
+    UI_checkbox checkbox("checkbox_text", Color(255, 255, 255), Color(0, 0, 0));
+    json j = checkbox.to_json(0);
     UI_checkbox checkbox2(j);
-    EXPECT_EQ(checkbox.id(), checkbox2.id());
     EXPECT_EQ(checkbox.text(), checkbox2.text());
     EXPECT_EQ(checkbox.fg_color(), checkbox2.fg_color());
     EXPECT_EQ(checkbox.bg_color(), checkbox2.bg_color());
diff --git a/tests/UI_combobox.cpp b/tests/UI_combobox.cpp
index 157ae9f..dacbc1c 100644
--- a/tests/UI_combobox.cpp
+++ b/tests/UI_combobox.cpp
@@ -2,10 +2,9 @@
 
 TEST(UI_combobox, to_from_json)
 {
-    UI_combobox checkbox("checkbox_id", "checkbox_text", Color(255, 255, 255), Color(0, 0, 0), {"option1", "option2"});
-    json j = checkbox.to_json();
+    UI_combobox checkbox("checkbox_text", Color(255, 255, 255), Color(0, 0, 0), {"option1", "option2"});
+    json j = checkbox.to_json(0);
     UI_combobox checkbox2(j);
-    EXPECT_EQ(checkbox.id(), checkbox2.id());
     EXPECT_EQ(checkbox.text(), checkbox2.text());
     EXPECT_EQ(checkbox.fg_color(), checkbox2.fg_color());
     EXPECT_EQ(checkbox.bg_color(), checkbox2.bg_color());
diff --git a/tests/UI_dial.cpp b/tests/UI_dial.cpp
index bc21f96..760a647 100644
--- a/tests/UI_dial.cpp
+++ b/tests/UI_dial.cpp
@@ -2,10 +2,9 @@
 
 TEST(UI_dial, to_from_json)
 {
-    UI_dial dial("slider_id", "slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
-    json j = dial.to_json();
+    UI_dial dial("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    json j = dial.to_json(0);
     UI_dial dial2(j);
-    EXPECT_EQ(dial.id(), dial2.id());
     EXPECT_EQ(dial.text(), dial2.text());
     EXPECT_EQ(dial.fg_color(), dial2.fg_color());
     EXPECT_EQ(dial.bg_color(), dial2.bg_color());
@@ -14,7 +13,7 @@ TEST(UI_dial, to_from_json)
 
 TEST(UI_dial, set_value)
 {
-    UI_dial dial("slider_id", "slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    UI_dial dial("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
     dial.set_value(75);
     EXPECT_EQ(dial.value(), 75);
 }
diff --git a/tests/UI_item.cpp b/tests/UI_item.cpp
index ec947a4..7ffd0f1 100644
--- a/tests/UI_item.cpp
+++ b/tests/UI_item.cpp
@@ -45,8 +45,8 @@ TEST(UI_item, from_json)
 {
     UI_item item(std::string("item"));
     json j;
+    j["id"] = 0;
     j["type"] = "item";
-    j["id"] = "item_id";
     j["text"] = "item_text";
     j["text_size"] = 12;
     j["fg_color"] = "0xFFFFFFFF";
@@ -55,7 +55,6 @@ TEST(UI_item, from_json)
     j["visible"] = true;
 
     item.from_json(j);
-    EXPECT_EQ(item.id(), "item_id");
     EXPECT_EQ(item.text(), "item_text");
     EXPECT_EQ(item.text_size(), 12);
     EXPECT_EQ(item.fg_color(), Color(255, 255, 255));
@@ -64,10 +63,10 @@ TEST(UI_item, from_json)
 
 TEST(UI_item, to_json)
 {
-    UI_item item("item_id", "item", "item_text", 12, Color(255, 255, 255), Color(0, 0, 0));
-    json j = item.to_json();
+    UI_item item("item", "item_text", 12, Color(255, 255, 255), Color(0, 0, 0));
+    json j = item.to_json(0);
     EXPECT_EQ(j.at("type"), "item");
-    EXPECT_EQ(j.at("id"), "item_id");
+    EXPECT_EQ(j.at("id"), 0);
     EXPECT_EQ(j.at("text"), "item_text");
     EXPECT_EQ(j.at("text_size"), 12);
     EXPECT_EQ(j.at("fg_color"), Color(255, 255, 255).to_hex());
diff --git a/tests/UI_label.cpp b/tests/UI_label.cpp
index df4074a..efbb905 100644
--- a/tests/UI_label.cpp
+++ b/tests/UI_label.cpp
@@ -2,17 +2,16 @@
 
 TEST(UI_label, to_from_json)
 {
-    UI_label label(std::string("label"), std::string("label_text"), Color(0, 0, 0), Color(255, 255, 255));
-    json j = label.to_json();
+    UI_label label("label_text", Color(0, 0, 0), Color(255, 255, 255));
+    json j = label.to_json(0);
     EXPECT_EQ(j["type"], "UI_label");
-    EXPECT_EQ(j["id"], "label");
+    EXPECT_EQ(j["id"], 0);
     EXPECT_EQ(j["text"], "label_text");
     EXPECT_EQ(j["text_size"], 12);
     EXPECT_EQ(j["fg_color"], "#000000FF");
     EXPECT_EQ(j["bg_color"], "#FFFFFFFF");
 
     UI_label label2(j);
-    EXPECT_EQ(label2.id(), "label");
     EXPECT_EQ(label2.text(), "label_text");
     EXPECT_EQ(label2.text_size(), 12);
     EXPECT_EQ(label2.fg_color(), Color(0, 0, 0));
diff --git a/tests/UI_led.cpp b/tests/UI_led.cpp
index 3fabab0..614b1df 100644
--- a/tests/UI_led.cpp
+++ b/tests/UI_led.cpp
@@ -2,10 +2,9 @@
 
 TEST(UI_led, to_from_json)
 {
-    UI_led led(std::string("led"), std::string("led_text"), Color(0, 0, 0), Color(255, 255, 255), Color(255, 0, 0));
-    json j = led.to_json();
+    UI_led led("led_text", Color(0, 0, 0), Color(255, 255, 255), Color(255, 0, 0));
+    json j = led.to_json(0);
     UI_led led2(j);
-    EXPECT_EQ(led.id(), led2.id());
     EXPECT_EQ(led.text(), led2.text());
     EXPECT_EQ(led.fg_color(), led2.fg_color());
     EXPECT_EQ(led.bg_color(), led2.bg_color());
@@ -14,7 +13,7 @@ TEST(UI_led, to_from_json)
 
 TEST(UI_led, set_led_color)
 {
-    UI_led led(std::string("led"), std::string("led_text"), Color(0, 0, 0), Color(255, 255, 255), Color(255, 0, 0));
+    UI_led led("led_text", Color(0, 0, 0), Color(255, 255, 255), Color(255, 0, 0));
     led.set_led_color(Color(0, 255, 0));
     EXPECT_EQ(led.led_color(), Color(0, 255, 0));
 }
\ No newline at end of file
diff --git a/tests/UI_slider.cpp b/tests/UI_slider.cpp
index a7ebda0..9ee2410 100644
--- a/tests/UI_slider.cpp
+++ b/tests/UI_slider.cpp
@@ -2,10 +2,9 @@
 
 TEST(UI_slider, to_from_json)
 {
-    UI_slider slider("slider_id", "slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50, nullptr);
-    json j = slider.to_json();
+    UI_slider slider("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50, nullptr);
+    json j = slider.to_json(0);
     UI_slider slider2(j);
-    EXPECT_EQ(slider.id(), slider2.id());
     EXPECT_EQ(slider.text(), slider2.text());
     EXPECT_EQ(slider.fg_color(), slider2.fg_color());
     EXPECT_EQ(slider.bg_color(), slider2.bg_color());
@@ -14,6 +13,6 @@ TEST(UI_slider, to_from_json)
 
 TEST(UI_slider, value)
 {
-    UI_slider slider("slider_id", "slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    UI_slider slider("slider_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
     EXPECT_EQ(slider.value(), 50);
 }
diff --git a/tests/UI_textbox.cpp b/tests/UI_textbox.cpp
index 955011a..96b54d3 100644
--- a/tests/UI_textbox.cpp
+++ b/tests/UI_textbox.cpp
@@ -2,10 +2,9 @@
 
 TEST(UI_textbox, to_from_json)
 {
-    UI_textbox textbox(std::string("textbox"), std::string("hint"), Color(0, 0, 0), Color(255, 255, 255));
-    json j = textbox.to_json();
+    UI_textbox textbox("hint", Color(0, 0, 0), Color(255, 255, 255));
+    json j = textbox.to_json(0);
     UI_textbox textbox2(j);
-    EXPECT_EQ(textbox.id(), textbox2.id());
     EXPECT_EQ(textbox.text(), textbox2.text());
     EXPECT_EQ(textbox.fg_color(), textbox2.fg_color());
     EXPECT_EQ(textbox.bg_color(), textbox2.bg_color());
@@ -14,7 +13,7 @@ TEST(UI_textbox, to_from_json)
 
 TEST(UI_textbox, set_text)
 {
-    UI_textbox textbox(std::string("textbox"), std::string("hint"), Color(0, 0, 0), Color(255, 255, 255));
+    UI_textbox textbox("hint", Color(0, 0, 0), Color(255, 255, 255));
     EXPECT_EQ(textbox.text(), "");
     textbox.set_text("random text");
     EXPECT_EQ(textbox.text(), "random text");
diff --git a/tests/UI_thermo.cpp b/tests/UI_thermo.cpp
index 370d103..b026e90 100644
--- a/tests/UI_thermo.cpp
+++ b/tests/UI_thermo.cpp
@@ -2,10 +2,9 @@
 
 TEST(UI_thermo, to_from_json)
 {
-    UI_thermo thermo("thermo_id", "thermo_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
-    json j = thermo.to_json();
+    UI_thermo thermo("thermo_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    json j = thermo.to_json(0);
     UI_thermo thermo2(j);
-    EXPECT_EQ(thermo.id(), thermo2.id());
     EXPECT_EQ(thermo.text(), thermo2.text());
     EXPECT_EQ(thermo.fg_color(), thermo2.fg_color());
     EXPECT_EQ(thermo.bg_color(), thermo2.bg_color());
@@ -14,7 +13,7 @@ TEST(UI_thermo, to_from_json)
 
 TEST(UI_thermo, set_value)
 {
-    UI_thermo thermo("thermo_id", "thermo_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
+    UI_thermo thermo("thermo_text", Color(255, 255, 255), Color(0, 0, 0), 0, 100, 50);
     thermo.set_value(75);
     EXPECT_EQ(thermo.value(), 75);
 }