diff --git a/eeschema/sch_file_versions.h b/eeschema/sch_file_versions.h
index c13ce21f8c..fc8d5aa6bb 100644
--- a/eeschema/sch_file_versions.h
+++ b/eeschema/sch_file_versions.h
@@ -63,4 +63,5 @@
 //#define SEXPR_SCHEMATIC_FILE_VERSION 20210126  // Fix bug with writing pin uuids.
 //#define SEXPR_SCHEMATIC_FILE_VERSION 20210406  // Add schematic level uuids.
 //#define SEXPR_SCHEMATIC_FILE_VERSION 20210606  // Change overbar syntax from `~...~` to `~{...}`.
-#define SEXPR_SCHEMATIC_FILE_VERSION 20210615  // Update overbar syntax in net names.
+//#define SEXPR_SCHEMATIC_FILE_VERSION 20210615  // Update overbar syntax in net names.
+#define SEXPR_SCHEMATIC_FILE_VERSION 20210621  // Update overbar syntax in bus aliases.
diff --git a/eeschema/sch_plugins/kicad/sch_sexpr_parser.cpp b/eeschema/sch_plugins/kicad/sch_sexpr_parser.cpp
index 56a049e67f..36cb960048 100644
--- a/eeschema/sch_plugins/kicad/sch_sexpr_parser.cpp
+++ b/eeschema/sch_plugins/kicad/sch_sexpr_parser.cpp
@@ -3013,10 +3013,19 @@ void SCH_SEXPR_PARSER::parseBusAlias( SCH_SCREEN* aScreen )
     wxCHECK( aScreen, /* void */ );
 
     T token;
-    auto busAlias = std::make_shared<BUS_ALIAS>( aScreen );
+    std::shared_ptr<BUS_ALIAS> busAlias = std::make_shared<BUS_ALIAS>( aScreen );
+    wxString alias;
+    wxString member;
 
     NeedSYMBOL();
-    busAlias->SetName( FromUTF8() );
+
+    alias = FromUTF8();
+
+    if( m_requiredVersion < 20210621 )
+        alias = ConvertToNewOverbarNotation( alias );
+
+    busAlias->SetName( alias );
+
     NeedLEFT();
     token = NextTok();
 
@@ -3030,7 +3039,13 @@ void SCH_SEXPR_PARSER::parseBusAlias( SCH_SCREEN* aScreen )
         if( !IsSymbol( token ) )
             Expecting( "quoted string" );
 
-        busAlias->AddMember( FromUTF8() );
+        member = FromUTF8();
+
+        if( m_requiredVersion < 20210621 )
+            member = ConvertToNewOverbarNotation( member );
+
+        busAlias->AddMember( member );
+
         token = NextTok();
     }