diff --git a/pcbnew/plugins/legacy/legacy_plugin.cpp b/pcbnew/plugins/legacy/legacy_plugin.cpp
index d886a32ce6..3156dadbf3 100644
--- a/pcbnew/plugins/legacy/legacy_plugin.cpp
+++ b/pcbnew/plugins/legacy/legacy_plugin.cpp
@@ -850,6 +850,7 @@ void LEGACY_PLUGIN::loadSETUP()
     char*                     saveptr;
 
     m_board->m_LegacyDesignSettingsLoaded = true;
+    m_board->m_LegacyNetclassesLoaded = true;
 
     while( ( line = READLINE( m_reader ) ) != nullptr )
     {