diff --git a/emmental/buttons.py b/emmental/buttons.py
index f9e80e6..fd4525c 100644
--- a/emmental/buttons.py
+++ b/emmental/buttons.py
@@ -96,14 +96,23 @@ class ImageToggle(Button):
     """Inspired by a ToggleButton, but changes image based on state."""
 
     active_icon_name = GObject.Property(type=str)
+    active_tooltip_text = GObject.Property(type=str)
+
     inactive_icon_name = GObject.Property(type=str)
+    inactive_tooltip_text = GObject.Property(type=str)
 
     def __init__(self, active_icon_name: str, inactive_icon_name: str,
-                 active: bool = False, **kwargs) -> None:
+                 active_tooltip_text: str | None = None,
+                 inactive_tooltip_text: str | None = None,
+                 *, active: bool = False, **kwargs) -> None:
         """Initialize an ImageToggle button."""
         super().__init__(active_icon_name=active_icon_name,
                          inactive_icon_name=inactive_icon_name,
-                         icon_name=inactive_icon_name, active=active, **kwargs)
+                         icon_name=inactive_icon_name,
+                         active_tooltip_text=active_tooltip_text,
+                         inactive_tooltip_text=inactive_tooltip_text,
+                         tooltip_text=inactive_tooltip_text,
+                         active=active, **kwargs)
 
     def do_clicked(self) -> None:
         """Handle a click event."""
@@ -117,8 +126,12 @@ class ImageToggle(Button):
     @active.setter
     def active(self, newval: bool) -> None:
         if newval != self.active:
-            icon = self.active_icon_name if newval else self.inactive_icon_name
-            self.icon_name = icon
+            if newval:
+                self.icon_name = self.active_icon_name
+                self.props.tooltip_text = self.active_tooltip_text
+            else:
+                self.icon_name = self.inactive_icon_name
+                self.props.tooltip_text = self.inactive_tooltip_text
             self.emit("toggled")
 
     @GObject.Signal
diff --git a/emmental/nowplaying/__init__.py b/emmental/nowplaying/__init__.py
index f2e647c..ddb0ff8 100644
--- a/emmental/nowplaying/__init__.py
+++ b/emmental/nowplaying/__init__.py
@@ -41,8 +41,8 @@ class Card(Gtk.Box):
         self._bottom_box = Gtk.Box.new(Gtk.Orientation.HORIZONTAL, 0)
         self._favorite = buttons.ImageToggle("heart-filled",
                                              "heart-outline-thick-symbolic",
-                                             tooltip_text="add to "
-                                                          "'Favorite Tracks'",
+                                             "remove from 'Favorite Tracks'",
+                                             "add to 'Favorite Tracks'",
                                              icon_size=Gtk.IconSize.LARGE,
                                              has_frame=False, sensitive=False,
                                              valign=Gtk.Align.CENTER)
diff --git a/tests/nowplaying/test_nowplaying.py b/tests/nowplaying/test_nowplaying.py
index 7804044..bdcf180 100644
--- a/tests/nowplaying/test_nowplaying.py
+++ b/tests/nowplaying/test_nowplaying.py
@@ -89,9 +89,11 @@ class TestNowPlaying(unittest.TestCase):
                          self.card._favorite)
 
         self.assertEqual(self.card._favorite.active_icon_name, "heart-filled")
+        self.assertEqual(self.card._favorite.active_tooltip_text,
+                         "remove from 'Favorite Tracks'")
         self.assertEqual(self.card._favorite.inactive_icon_name,
                          "heart-outline-thick-symbolic")
-        self.assertEqual(self.card._favorite.get_tooltip_text(),
+        self.assertEqual(self.card._favorite.inactive_tooltip_text,
                          "add to 'Favorite Tracks'")
         self.assertEqual(self.card._favorite.icon_size, Gtk.IconSize.LARGE)
         self.assertEqual(self.card._favorite.get_valign(), Gtk.Align.CENTER)
diff --git a/tests/test_buttons.py b/tests/test_buttons.py
index 3904c9b..6553528 100644
--- a/tests/test_buttons.py
+++ b/tests/test_buttons.py
@@ -190,6 +190,24 @@ class TestImageToggle(unittest.TestCase):
                                                active=True)
         self.assertTrue(button2.active)
 
+    def test_tooltip_text(self):
+        """Test the active and inactive tooltip text."""
+        self.assertEqual(self.button.active_tooltip_text, None)
+        self.assertEqual(self.button.inactive_tooltip_text, None)
+
+        button2 = emmental.buttons.ImageToggle("active", "inactive",
+                                               "active tooltip text",
+                                               "inactive tooltip text")
+        self.assertEqual(button2.active_tooltip_text, "active tooltip text")
+        self.assertEqual(button2.inactive_tooltip_text,
+                         "inactive tooltip text")
+        self.assertEqual(button2.get_tooltip_text(), "inactive tooltip text")
+
+        button2.active = True
+        self.assertEqual(button2.get_tooltip_text(), "active tooltip text")
+        button2.active = False
+        self.assertEqual(button2.get_tooltip_text(), "inactive tooltip text")
+
     def test_toggle(self):
         """Test the toggle signal."""
         toggled = unittest.mock.Mock()