diff --git a/toonz/sources/include/tproperty.h b/toonz/sources/include/tproperty.h
index d317a61..0229761 100644
--- a/toonz/sources/include/tproperty.h
+++ b/toonz/sources/include/tproperty.h
@@ -68,7 +68,7 @@ public:
   class TypeError {};
   class RangeError {};
 
-  TProperty(std::string name) : m_name(name) {
+  TProperty(std::string name) : m_name(name), m_visible(true) {
     m_qstringName = QString::fromStdString(name);
   }