diff --git a/copy_this/modules/d3/d3geoip/models/d3geoip.php b/copy_this/modules/d3/d3geoip/models/d3geoip.php
index 270408f..3d5654f 100644
--- a/copy_this/modules/d3/d3geoip/models/d3geoip.php
+++ b/copy_this/modules/d3/d3geoip/models/d3geoip.php
@@ -48,8 +48,13 @@ class d3GeoIP extends oxbase
                 $sIP = $this->getIP();
             }
 
-            $iIPNum = $this->_getNumIp($sIP);
-            $sISOAlpha = $this->LoadByIPNum($iIPNum);
+            $iIPNum = $this->_getNumIp(
+                oxRegistry::getConfig()->checkParamSpecialChars(
+                    str_replace(' ', '', $sIP)
+                )
+            );
+
+            $sISOAlpha = $this->loadByIPNum($iIPNum);
 
             if (!$sISOAlpha)
             {
@@ -93,7 +98,7 @@ class d3GeoIP extends oxbase
 
         stopProfile(__METHOD__);
 
-        return $sIP;
+        return oxRegistry::getConfig()->checkParamSpecialChars(str_replace(' ', '', $sIP));
     }
 
     /**
diff --git a/setup+doku/Precheck/d3precheck.php b/setup+doku/Precheck/d3precheck.php
index 900f3c5..3802750 100644
--- a/setup+doku/Precheck/d3precheck.php
+++ b/setup+doku/Precheck/d3precheck.php
@@ -86,9 +86,9 @@ class requConfig
         // benötigt PHP-Extension (kaskadierbar (siehe "Desc1"))
         'hasExtension'           => array(
             array(
-                'blExec'  => 0,
+                'blExec'  => 1,
                 'aParams' => array(
-                    'type' => 'curl',
+                    'type' => 'bcmath',
                 ),
             ),
             array(