diff --git a/src/PluginBootstrap.php b/src/PluginBootstrap.php
index a737a1428045ab0c2c86fe461307f9ae35f8f2a3..b12f747094494d956e8bd7a281db8e28b18665f6 100644
--- a/src/PluginBootstrap.php
+++ b/src/PluginBootstrap.php
@@ -135,7 +135,7 @@ final class PluginBootstrap {
 	private function add_activation_hook_for_save_activation_date() {
 		add_action( 'activated_plugin', static function ( $plugin_file, $network_wide = false ) {
 			if ( ! $network_wide ) {
-				$option_name     = 'plugin_activation_' . $plugin_file;
+				$option_name     = 'activation_plugin_' . $plugin_file;
 				$activation_date = get_option( $option_name, '' );
 				if ( '' === $activation_date ) {
 					$activation_date = current_time( 'mysql' );