diff --git a/toonz/sources/toonz/tpanels.cpp b/toonz/sources/toonz/tpanels.cpp
index a03604e..8dcc04e 100644
--- a/toonz/sources/toonz/tpanels.cpp
+++ b/toonz/sources/toonz/tpanels.cpp
@@ -687,8 +687,13 @@ ColorFieldEditorController::ColorFieldEditorController() {
 //-----------------------------------------------------------------------------
 
 void ColorFieldEditorController::edit(DVGui::ColorField *colorField) {
-  if (m_currentColorField && m_currentColorField->isEditing())
-    m_currentColorField->setIsEditing(false);
+  if (m_currentColorField) {
+    if (m_currentColorField->isEditing())
+      m_currentColorField->setIsEditing(false);
+    disconnect(m_currentColorField,
+               SIGNAL(colorChanged(const TPixel32 &, bool)), this,
+               SLOT(onColorChanged(const TPixel32 &, bool)));
+  }
 
   m_currentColorField = colorField;
   m_currentColorField->setIsEditing(true);