diff --git a/pcbnew/import_gfx/dxf_import_plugin.h b/pcbnew/import_gfx/dxf_import_plugin.h
index bd698caa99..83ffe1484e 100644
--- a/pcbnew/import_gfx/dxf_import_plugin.h
+++ b/pcbnew/import_gfx/dxf_import_plugin.h
@@ -145,8 +145,9 @@ public:
 
     const wxArrayString GetFileExtensions() const override
     {
-        // N.B. The extra "" hints for some compilers that the array should not be optimized out
-        return wxArrayString( 1, { "dxf", "" } );
+        wxArrayString list;
+        list.Add( "dxf" );
+        return list;
     }
 
     bool Load( const wxString& aFileName ) override;
diff --git a/pcbnew/import_gfx/svg_import_plugin.h b/pcbnew/import_gfx/svg_import_plugin.h
index c9e05f7558..07ecd9f293 100644
--- a/pcbnew/import_gfx/svg_import_plugin.h
+++ b/pcbnew/import_gfx/svg_import_plugin.h
@@ -44,8 +44,9 @@ public:
 
     const wxArrayString GetFileExtensions() const override
     {
-        // N.B. The extra "" hints for some compilers that the array should not be optimized out
-        return wxArrayString( 1, { "svg", "" } );
+        wxArrayString list;
+        list.Add( "svg" );
+        return list;
     }
 
     /**