diff --git a/framework/helpers/BaseInflector.php b/framework/helpers/BaseInflector.php
index 8ba8927..fd3deb4 100644
--- a/framework/helpers/BaseInflector.php
+++ b/framework/helpers/BaseInflector.php
@@ -480,8 +480,8 @@ class BaseInflector
         $parts = explode($replacement, static::transliterate($string));
 
         $replaced = array_map(function ($element) use ($replacement) {
-            $element = preg_replace('/[^a-zA-Z0-9=\s—–]+/u', '', $element);
-            return preg_replace('/[=\s—–]+/u', $replacement, $element);
+            $element = preg_replace('/[^a-zA-Z0-9=\s—–-]+/u', '', $element);
+            return preg_replace('/[=\s—–-]+/u', $replacement, $element);
         }, $parts);
 
         $string = trim(implode($replacement, $replaced), $replacement);
diff --git a/tests/framework/helpers/InflectorTest.php b/tests/framework/helpers/InflectorTest.php
index 4ff72c2..257b64e 100644
--- a/tests/framework/helpers/InflectorTest.php
+++ b/tests/framework/helpers/InflectorTest.php
@@ -187,7 +187,8 @@ class InflectorTest extends TestCase
     {
         $this->assertEquals('dont_replace_replacement', Inflector::slug('dont replace_replacement', '_'));
         $this->assertEquals('remove_trailing_replacements', Inflector::slug('_remove trailing replacements_', '_'));
-        $this->assertEquals('thisrepisrepreplacement', Inflector::slug('this is REP-lacement', 'REP'));
+        $this->assertEquals('thisrepisreprepreplacement', Inflector::slug('this is REP-lacement', 'REP'));
+        $this->assertEquals('0_100_kmh', Inflector::slug('0-100 Km/h', '_'));
     }
 
     public function testSlugIntl()