diff --git a/pear/PEAR/Packager.php b/pear/PEAR/Packager.php
index 72591e1a990..6a4f10c6e83 100644
--- a/pear/PEAR/Packager.php
+++ b/pear/PEAR/Packager.php
@@ -135,7 +135,7 @@ class PEAR_Packager extends PEAR_Common
         $pkgfile = basename($pkgfile);
         $pkgver = $pkginfo['package'] . '-' . $pkginfo['version'];
         // don't want strange characters
-        $pkgver = ereg_replace ('[^a-zA-Z0-9._-]', '_', $pkgver);
+        $pkgver = ereg_replace ('[^a-zA-Z0-9._]', '_', $pkgver);
         $this->tmpdir = $pwd . DIRECTORY_SEPARATOR . $pkgver;
         if (file_exists($this->tmpdir)) {
             return $this->raiseError('Tmpdir: ' . $this->tmpdir .' already exists',