diff --git a/contrib/numeric_score/main.php b/contrib/numeric_score/main.php
index 5d686e0a..8baae0a1 100644
--- a/contrib/numeric_score/main.php
+++ b/contrib/numeric_score/main.php
@@ -200,7 +200,7 @@ class NumericScore extends Extension {
 
 	public function onSearchTermParse(SearchTermParseEvent $event) {
 		$matches = array();
-		if(preg_match("/^score(<|<=|=|>=|>)(\d+)$/", $event->term, $matches)) {
+		if(preg_match("/^score(<|<=|=|>=|>)(-?\d+)$/", $event->term, $matches)) {
 			$cmp = $matches[1];
 			$score = $matches[2];
 			$event->add_querylet(new Querylet("numeric_score $cmp $score"));