diff --git a/pcbnew/dialogs/panel_setup_rules.cpp b/pcbnew/dialogs/panel_setup_rules.cpp
index 7640419b2b..52a2cfea74 100644
--- a/pcbnew/dialogs/panel_setup_rules.cpp
+++ b/pcbnew/dialogs/panel_setup_rules.cpp
@@ -37,7 +37,7 @@ PANEL_SETUP_RULES::PANEL_SETUP_RULES( PAGED_DIALOG* aParent, PCB_EDIT_FRAME* aFr
         m_frame( aFrame ),
         m_scintillaTricks( nullptr )
 {
-    m_scintillaTricks = new SCINTILLA_TRICKS( m_textEditor, wxT( "{}" ) );
+    m_scintillaTricks = new SCINTILLA_TRICKS( m_textEditor, wxT( "()" ) );
 
     int    size = wxNORMAL_FONT->GetPointSize();
     wxFont fixedFont( size, wxFONTFAMILY_TELETYPE, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL );