diff --git a/toonz/sources/toonzqt/functionsegmentviewer.cpp b/toonz/sources/toonzqt/functionsegmentviewer.cpp
index 9612002..ca1d3dc 100644
--- a/toonz/sources/toonzqt/functionsegmentviewer.cpp
+++ b/toonz/sources/toonzqt/functionsegmentviewer.cpp
@@ -948,6 +948,7 @@ FunctionSegmentViewer::FunctionSegmentViewer(QWidget *parent,
   validator->setBottom(1);
   m_fromFld->setValidator(validator);
   m_toFld->setValidator(validator);
+  m_paramNameLabel->setTextInteractionFlags(Qt::TextSelectableByMouse);
 
   m_stepFld->setEnabled(true);