diff --git a/editor/project_manager.cpp b/editor/project_manager.cpp
index 7ce4029476a..e31851b3f15 100644
--- a/editor/project_manager.cpp
+++ b/editor/project_manager.cpp
@@ -1526,6 +1526,13 @@ void ProjectManager::_open_selected_projects_ask() {
 	}
 
 	int config_version = (int)cf->get_value("", "config_version", 0);
+
+	// Check if the config_version property was empty or 0
+	if (config_version == 0) {
+		ask_update_settings->set_text(vformat(TTR("The following project settings file does not specify the version of Godot through which it was created.\n\n%s\n\nIf you proceed with opening it, it will be converted to Godot's current configuration file format.\nWarning: You will not be able to open the project with previous versions of the engine anymore."), conf));
+		ask_update_settings->popup_centered_minsize();
+		return;
+	}
 	// Check if we need to convert project settings from an earlier engine version
 	if (config_version < ProjectSettings::CONFIG_VERSION) {
 		ask_update_settings->set_text(vformat(TTR("The following project settings file was generated by an older engine version, and needs to be converted for this version:\n\n%s\n\nDo you want to convert it?\nWarning: You will not be able to open the project with previous versions of the engine anymore."), conf));