diff --git a/NEWS b/NEWS
index 3d99f7a8..2f52186f 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,4 @@
+* #3293 Fix that several palettes are not hooked up to the same button (erikos)
 * #3514 Remove invite when the activiy disappear from the mesh. (cassidy)
 * #3003 Make image drags on the clipboard work consistently. (marco)
 
diff --git a/sugar/graphics/icon.py b/sugar/graphics/icon.py
index 1598e4bd..cbff3f91 100644
--- a/sugar/graphics/icon.py
+++ b/sugar/graphics/icon.py
@@ -480,6 +480,8 @@ class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
         return self._palette
     
     def set_palette(self, palette):
+        if self._palette is not None:        
+            self._palette.props.invoker = None
         self._palette = palette
         if not self._palette.props.invoker:
             self._palette.props.invoker = CanvasInvoker(self)
diff --git a/sugar/graphics/palette.py b/sugar/graphics/palette.py
index 8f2a4041..acc14f74 100644
--- a/sugar/graphics/palette.py
+++ b/sugar/graphics/palette.py
@@ -192,9 +192,16 @@ class Palette(gtk.Window):
 
     def do_set_property(self, pspec, value):
         if pspec.name == 'invoker':
+            if self._invoker is not None:
+                self._invoker.disconnect(self._enter_invoker_hid)
+                self._invoker.disconnect(self._leave_invoker_hid)                                
+
             self._invoker = value
-            self._invoker.connect('mouse-enter', self._invoker_mouse_enter_cb)
-            self._invoker.connect('mouse-leave', self._invoker_mouse_leave_cb)
+            if value is not None:
+                self._enter_invoker_hid = self._invoker.connect(
+                    'mouse-enter', self._invoker_mouse_enter_cb)
+                self._leave_invoker_hid = self._invoker.connect(
+                    'mouse-leave', self._invoker_mouse_leave_cb)
         else:
             raise AssertionError
 
diff --git a/sugar/graphics/radiotoolbutton.py b/sugar/graphics/radiotoolbutton.py
index 80afb49d..8a1399a0 100644
--- a/sugar/graphics/radiotoolbutton.py
+++ b/sugar/graphics/radiotoolbutton.py
@@ -41,6 +41,8 @@ class RadioToolButton(gtk.RadioToolButton):
         return self._palette
     
     def set_palette(self, palette):
+        if self._palette is not None:        
+            self._palette.props.invoker = None
         self._palette = palette
         self._palette.props.invoker = ToolInvoker(self.child)
 
diff --git a/sugar/graphics/toggletoolbutton.py b/sugar/graphics/toggletoolbutton.py
index 5f446011..2c97fa38 100644
--- a/sugar/graphics/toggletoolbutton.py
+++ b/sugar/graphics/toggletoolbutton.py
@@ -37,6 +37,8 @@ class ToggleToolButton(gtk.ToggleToolButton):
         return self._palette
     
     def set_palette(self, palette):
+        if self._palette is not None:        
+            self._palette.props.invoker = None
         self._palette = palette
         self._palette.props.invoker = ToolInvoker(self.child)
 
diff --git a/sugar/graphics/toolbutton.py b/sugar/graphics/toolbutton.py
index e06afe95..8a0005e3 100644
--- a/sugar/graphics/toolbutton.py
+++ b/sugar/graphics/toolbutton.py
@@ -41,12 +41,14 @@ class ToolButton(gtk.ToolButton):
         return self._palette
     
     def set_palette(self, palette):
+        if self._palette is not None:        
+            self._palette.props.invoker = None
         self._palette = palette
         self._palette.props.invoker = ToolInvoker(self.child)
 
     def set_tooltip(self, text):
         self.set_palette(Palette(text))
-    
+        
     def do_expose_event(self, event):
         if self._palette and self._palette.is_up():
             invoker = self._palette.props.invoker
diff --git a/sugar/graphics/tray.py b/sugar/graphics/tray.py
index af2e7eb7..b779ac9b 100644
--- a/sugar/graphics/tray.py
+++ b/sugar/graphics/tray.py
@@ -216,6 +216,8 @@ class _IconWidget(gtk.EventBox):
         gtk.EventBox.do_expose_event(self, event)
 
     def set_palette(self, palette):
+        if self._palette is not None:        
+            self._palette.props.invoker = None
         self._palette = palette
         self._palette.props.invoker = ToolInvoker(self)