diff --git a/inc/functions.php b/inc/functions.php
index ad69e55a..71231203 100755
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -2924,10 +2924,15 @@ function generation_strategy($fun, $array=array()) { global $config;
 					_syslog(LOG_ERR, "Could not initialize generate queue, falling back to immediate rebuild strategy");
 				}
 				return 'rebuild';
-			} else {
-				$queue->push(serialize(array('build', $fun, $array, $action)));
-				return 'ignore';
 			}
+			$ret = $queue->push(serialize(array('build', $fun, $array, $action)));
+			if ($ret === false) {
+				if ($config['syslog']) {
+					_syslog(LOG_ERR, "Could not push item in the queue, falling back to immediate rebuild strategy");
+				}
+				return 'rebuild';
+			}
+			return 'ignore';
 		case 'build_on_load':
 			return 'delete';
 	}
diff --git a/inc/queue.php b/inc/queue.php
index 0ecd1e3c..a5905c84 100644
--- a/inc/queue.php
+++ b/inc/queue.php
@@ -22,11 +22,11 @@ class Queues {
 				$this->key = $key;
 			}
 
-			public function push(string $str): Queue {
+			public function push(string $str): bool {
 				$this->lock->get_ex();
-				file_put_contents($this->key . microtime(true), $str);
+				$ret = file_put_contents($this->key . microtime(true), $str);
 				$this->lock->free();
-				return $this;
+				return $ret !== false;
 			}
 
 			public function pop(int $n = 1): array {
@@ -63,8 +63,8 @@ class Queues {
 	 */
 	public static function none(): Queue {
 		return new class() implements Queue {
-			public function push(string $str): Queue {
-				return $this;
+			public function push(string $str): bool {
+				return true;
 			}
 
 			public function pop(int $n = 1): array {
@@ -91,7 +91,7 @@ class Queues {
 
 interface Queue {
 	// Push a string in the queue.
-	public function push(string $str): Queue;
+	public function push(string $str): bool;
 
 	// Get a string from the queue.
 	public function pop(int $n = 1): array;