diff --git a/kicad/pcm/pcm.cpp b/kicad/pcm/pcm.cpp
index 9e4afd9190..7636f88273 100644
--- a/kicad/pcm/pcm.cpp
+++ b/kicad/pcm/pcm.cpp
@@ -134,12 +134,15 @@ PLUGIN_CONTENT_MANAGER::PLUGIN_CONTENT_MANAGER( wxWindow* aParent ) : m_dialog(
                     PCM_INSTALLATION_ENTRY entry;
                     wxFileName             subdir_file( d.GetPath(), subdir );
 
+                    wxString actual_package_id = subdir;
+                    actual_package_id.Replace( '_', '.' );
+
                     // wxFileModificationTime bugs out on windows for directories
                     wxStructStat stat;
                     wxStat( subdir_file.GetFullPath(), &stat );
 
                     entry.package.name = subdir;
-                    entry.package.identifier = subdir;
+                    entry.package.identifier = actual_package_id;
                     entry.current_version = "0.0";
                     entry.install_timestamp = stat.st_mtime;
                     entry.repository_name = wxT( "<unknown>" );