diff --git a/libraries/src/Router/SiteRouter.php b/libraries/src/Router/SiteRouter.php
index 6dbabc1ea02a2..d305f2b01c4dd 100644
--- a/libraries/src/Router/SiteRouter.php
+++ b/libraries/src/Router/SiteRouter.php
@@ -597,7 +597,9 @@ protected function processParseRules(&$uri, $stage = self::PROCESS_DURING)
 			// Process the pagination support
 			if ($this->_mode == JROUTER_MODE_SEF)
 			{
-				if ($start = $uri->getVar('start'))
+				$start = $uri->getVar('start');
+
+				if ($start !== null)
 				{
 					$uri->delVar('start');
 					$vars['limitstart'] = $start;
@@ -678,7 +680,9 @@ protected function processBuildRules(&$uri, $stage = self::PROCESS_DURING)
 
 			if ($this->_mode == JROUTER_MODE_SEF && $route)
 			{
-				if ($limitstart = $uri->getVar('limitstart'))
+				$limitstart = $uri->getVar('limitstart');
+
+				if ($limitstart !== null)
 				{
 					$uri->setVar('start', (int) $limitstart);
 					$uri->delVar('limitstart');
diff --git a/tests/unit/suites/libraries/cms/router/JRouterSiteTest.php b/tests/unit/suites/libraries/cms/router/JRouterSiteTest.php
index c2c91c1e9ceef..7dd897fba4b65 100644
--- a/tests/unit/suites/libraries/cms/router/JRouterSiteTest.php
+++ b/tests/unit/suites/libraries/cms/router/JRouterSiteTest.php
@@ -1192,6 +1192,11 @@ public function casesProcessBuildRules()
 				'mode'     => JROUTER_MODE_SEF,
 				'expected' => 'test?start=42'
 			),
+			'limitstart_zero' => array(
+				'url'      => 'test?limitstart=0',
+				'mode'     => JROUTER_MODE_SEF,
+				'expected' => 'test?start=0'
+			),
 		);
 	}