diff --git a/aaa-option-optimizer.php b/aaa-option-optimizer.php
index 75866c9..3bacb4d 100644
--- a/aaa-option-optimizer.php
+++ b/aaa-option-optimizer.php
@@ -7,7 +7,7 @@
  * Plugin Name: AAA Option Optimizer
  * Plugin URI: https://progressplanner.com/plugins/aaa-option-optimizer/
  * Description: Tracks autoloaded options usage and allows the user to optimize them.
- * Version: 1.6.0
+ * Version: 1.6.1
  * License: GPL-3.0+
  * Author: Team Prospress Planner
  * Author URI: https://prospressplanner.com/
diff --git a/readme.txt b/readme.txt
index d434e3a..d0ae23a 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,10 +1,10 @@
 === AAA Option Optimizer ===
-Contributors: joostdevalk, aristath, filipi
+Contributors: joostdevalk, aristath, filipi, progressplanner
 Tags: options, database, cleanup
 Requires at least: 6.7
 Tested up to: 7.0
 Requires PHP: 7.4
-Stable tag: 1.6.0
+Stable tag: 1.6.1
 License: GPL3+
 License URI: https://www.gnu.org/licenses/gpl-3.0.en.html
 
@@ -54,6 +54,10 @@ Please do a pull request via GitHub on [this file](https://github.com/ProgressPl
 
 == Changelog ==
 
+= 1.6.1 =
+
+* Fix infinite recursion in option access monitoring that could cause a fatal error in certain hosting environments.
+
 = 1.6.0
 
 * Replace using 'all' filter for monitoring option usage with 'pre_option' filter for better performance.
diff --git a/src/class-plugin.php b/src/class-plugin.php
index 0caf091..7213d73 100644
--- a/src/class-plugin.php
+++ b/src/class-plugin.php
@@ -25,6 +25,14 @@ class Plugin {
 	 */
 	protected $accessed_options = [];
 
+	/**
+	 * Whether the plugin is currently processing an option access.
+	 * Used to prevent infinite recursion.
+	 *
+	 * @var bool
+	 */
+	protected $is_processing = false;
+
 	/**
 	 * Whether the plugin should reset the option_optimizer data.
 	 *
@@ -101,10 +109,16 @@ public function reset( $should_reset = true ) {
 	 * @return void
 	 */
 	public function monitor_option_accesses_legacy( $tag ) {
+		if ( $this->is_processing ) {
+			return;
+		}
+
 		// Check if the tag is related to an option access.
 		if ( str_starts_with( $tag, 'option_' ) || str_starts_with( $tag, 'default_option_' ) ) {
-			$option_name = preg_replace( '#^(default_)?option_#', '', $tag );
+			$this->is_processing = true;
+			$option_name         = preg_replace( '#^(default_)?option_#', '', $tag );
 			$this->add_option_usage( $option_name );
+			$this->is_processing = false;
 		}
 	}
 
@@ -117,10 +131,15 @@ public function monitor_option_accesses_legacy( $tag ) {
 	 * @return mixed
 	 */
 	public function monitor_option_accesses_pre_option( $pre, $option_name ) {
+		if ( $this->is_processing ) {
+			return $pre;
+		}
 
 		// If the $pre is false the get_option() will not be short-circuited.
 		if ( ! defined( 'WP_SETUP_CONFIG' ) && false === $pre ) {
+			$this->is_processing = true;
 			$this->add_option_usage( $option_name );
+			$this->is_processing = false;
 		}
 
 		return $pre;