diff --git a/src/infrastructure/util/PhabricatorSlug.php b/src/infrastructure/util/PhabricatorSlug.php
index a6cf0bc70c..fd169914fe 100644
--- a/src/infrastructure/util/PhabricatorSlug.php
+++ b/src/infrastructure/util/PhabricatorSlug.php
@@ -42,13 +42,6 @@ final class PhabricatorSlug extends Phobject {
 
     $parts = explode('/', $slug);
 
-    // Convert "_-_" into "-". This is a little nicer for inputs with
-    // hyphens used as internal separators, and turns an input like "A - B"
-    // into "a-b" instead of "a_-_b";
-    foreach ($parts as $key => $part) {
-      $parts[$key] = str_replace('_-_', '-', $part);
-    }
-
     // Remove leading and trailing underscores from each component, if the
     // component has not been reduced to a single underscore. For example, "a?"
     // converts to "a", but "??" converts to "_".
diff --git a/src/infrastructure/util/__tests__/PhabricatorSlugTestCase.php b/src/infrastructure/util/__tests__/PhabricatorSlugTestCase.php
index e493ab7363..6a801bb54c 100644
--- a/src/infrastructure/util/__tests__/PhabricatorSlugTestCase.php
+++ b/src/infrastructure/util/__tests__/PhabricatorSlugTestCase.php
@@ -34,7 +34,7 @@ final class PhabricatorSlugTestCase extends PhabricatorTestCase {
       'a/??/c'            => 'a/_/c/',
       'a/?b/c'            => 'a/b/c/',
       'a/b?/c'            => 'a/b/c/',
-      'a - b'             => 'a-b/',
+      'a - b'             => 'a_-_b/',
       'a[b]'              => 'a_b/',
       'ab!'               => 'ab!/',
     );
@@ -51,7 +51,7 @@ final class PhabricatorSlugTestCase extends PhabricatorTestCase {
     $slugs = array(
       'a:b' => 'a_b',
       'a!b' => 'a_b',
-      'a - b' => 'a-b',
+      'a - b' => 'a_-_b',
       '' => '',
       'Demonology: HSA (Hexes, Signs, Alchemy)' =>
         'demonology_hsa_hexes_signs_alchemy',