diff --git a/include/cron.php b/include/cron.php
index c54fef8a9c..28d6713f54 100644
--- a/include/cron.php
+++ b/include/cron.php
@@ -142,28 +142,44 @@ function cron_run(&$argv, &$argc){
 	// Repair entries in the database
 	cron_repair_database();
 
+	// Poll contacts
+	cron_poll_contacts($argc, $argv);
+
+	logger('cron: end');
+
+	set_config('system','last_cron', time());
+
+	return;
+}
+
+/**
+ * @brief Clear cache entries
+ *
+ * @param App $a
+ */
+function cron_poll_contacts($argc, $argv) {
 	$manual_id  = 0;
 	$generation = 0;
 	$force      = false;
 	$restart    = false;
 
-	if(($argc > 1) && ($argv[1] == 'force'))
+	if (($argc > 1) && ($argv[1] == 'force'))
 		$force = true;
 
-	if(($argc > 1) && ($argv[1] == 'restart')) {
+	if (($argc > 1) && ($argv[1] == 'restart')) {
 		$restart = true;
 		$generation = intval($argv[2]);
-		if(! $generation)
+		if (!$generation)
 			killme();
 	}
 
-	if(($argc > 1) && intval($argv[1])) {
+	if (($argc > 1) && intval($argv[1])) {
 		$manual_id = intval($argv[1]);
 		$force     = true;
 	}
 
 	$interval = intval(get_config('system','poll_interval'));
-	if(! $interval)
+	if (!$interval)
 		$interval = ((get_config('system','delivery_interval') === false) ? 3 : intval(get_config('system','delivery_interval')));
 
 	// If we are using the worker we don't need a delivery interval
@@ -200,11 +216,11 @@ function cron_run(&$argv, &$argc){
 		dbesc(NETWORK_MAIL2)
 	);
 
-	if(! count($contacts)) {
+	if (!count($contacts)) {
 		return;
 	}
 
-	foreach($contacts as $c) {
+	foreach ($contacts as $c) {
 
 		$res = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
 			intval($c['id'])
@@ -266,7 +282,7 @@ function cron_run(&$argv, &$argc){
 							$update = true;
 						break;
 				}
-				if(!$update)
+				if (!$update)
 					continue;
 			}
 
@@ -278,12 +294,6 @@ function cron_run(&$argv, &$argc){
 				@time_sleep_until(microtime(true) + (float) $interval);
 		}
 	}
-
-	logger('cron: end');
-
-	set_config('system','last_cron', time());
-
-	return;
 }
 
 /**
diff --git a/include/cronhooks.php b/include/cronhooks.php
index b6cf0e7237..4bb1e5f659 100644
--- a/include/cronhooks.php
+++ b/include/cronhooks.php
@@ -31,6 +31,17 @@ function cronhooks_run(&$argv, &$argc){
 			return;
 	}
 
+	load_hooks();
+
+	if (($argc == 2) AND is_array($a->hooks) AND array_key_exists("cron", $a->hooks)) {
+                foreach ($a->hooks["cron"] as $hook)
+			if ($hook[1] == $argv[1]) {
+				logger("Calling cron hook '".$hook[1]."'", LOGGER_DEBUG);
+				call_single_hook($a, $name, $hook, $data);
+			}
+		return;
+	}
+
 	$last = get_config('system','last_cronhook');
 
 	$poll_interval = intval(get_config('system','cronhook_interval'));
@@ -47,13 +58,17 @@ function cronhooks_run(&$argv, &$argc){
 
 	$a->set_baseurl(get_config('system','url'));
 
-	load_hooks();
-
 	logger('cronhooks: start');
 
 	$d = datetime_convert();
 
-	call_hooks('cron', $d);
+	if (get_config("system", "worker") AND is_array($a->hooks) AND array_key_exists("cron", $a->hooks)) {
+                foreach ($a->hooks["cron"] as $hook) {
+			logger("Calling cronhooks for '".$hook[1]."'", LOGGER_DEBUG);
+			proc_run(PRIORITY_MEDIUM, "include/cronhooks.php", $hook[1]);
+		}
+	} else
+		call_hooks('cron', $d);
 
 	logger('cronhooks: end');
 
diff --git a/include/plugin.php b/include/plugin.php
index e25e9e85b1..f6e4a7a882 100644
--- a/include/plugin.php
+++ b/include/plugin.php
@@ -205,37 +205,41 @@ function load_hooks() {
  * @param string $name of the hook to call
  * @param string|array &$data to transmit to the callback handler
  */
-if(! function_exists('call_hooks')) {
 function call_hooks($name, &$data = null) {
 	$stamp1 = microtime(true);
 
 	$a = get_app();
 
-	#logger($name, LOGGER_ALL);
+	if (is_array($a->hooks) && array_key_exists($name, $a->hooks))
+		foreach ($a->hooks[$name] as $hook)
+			call_single_hook($a, $name, $hook, $data);
+}
 
-	if((is_array($a->hooks)) && (array_key_exists($name,$a->hooks))) {
-		foreach($a->hooks[$name] as $hook) {
-			// Don't run a theme's hook if the user isn't using the theme
-			if(strpos($hook[0], 'view/theme/') !== false && strpos($hook[0], 'view/theme/'.current_theme()) === false)
-				continue;
+/**
+ * @brief Calls a single hook.
+ *
+ * @param string $name of the hook to call
+ * @param array $hook Hook data
+ * @param string|array &$data to transmit to the callback handler
+ */
+function call_single_hook($a, $name, $hook, &$data = null) {
+	// Don't run a theme's hook if the user isn't using the theme
+	if (strpos($hook[0], 'view/theme/') !== false && strpos($hook[0], 'view/theme/'.current_theme()) === false)
+		return;
 
-			@include_once($hook[0]);
-			if(function_exists($hook[1])) {
-				$func = $hook[1];
-				//logger($name." => ".$hook[0].":".$func."()", LOGGER_DEBUG);
-				$func($a,$data);
-			}
-			else {
-				// remove orphan hooks
-				q("DELETE FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s'",
-					dbesc($name),
-					dbesc($hook[0]),
-					dbesc($hook[1])
-				);
-			}
-		}
+	@include_once($hook[0]);
+	if (function_exists($hook[1])) {
+		$func = $hook[1];
+		$func($a, $data);
+	} else {
+		// remove orphan hooks
+		q("DELETE FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s'",
+			dbesc($name),
+			dbesc($hook[0]),
+			dbesc($hook[1])
+		);
 	}
-}}
+}
 
 //check if an app_menu hook exist for plugin $name.
 //Return true if the plugin is an app
diff --git a/include/poller.php b/include/poller.php
index b54757b00b..811b81e174 100644
--- a/include/poller.php
+++ b/include/poller.php
@@ -46,10 +46,10 @@ function poller_run(&$argv, &$argc){
 
 	if(($argc <= 1) OR ($argv[1] != "no_cron")) {
 		// Run the cron job that calls all other jobs
-		proc_run("php","include/cron.php");
+		proc_run(PRIORITY_MEDIUM, "include/cron.php");
 
 		// Run the cronhooks job separately from cron for being able to use a different timing
-		proc_run("php","include/cronhooks.php");
+		proc_run(PRIORITY_MEDIUM, "include/cronhooks.php");
 
 		// Cleaning dead processes
 		poller_kill_stale_workers();