diff --git a/lam/lib/baseModule.inc b/lam/lib/baseModule.inc
index df01944f..49d5be06 100644
--- a/lam/lib/baseModule.inc
+++ b/lam/lib/baseModule.inc
@@ -521,12 +521,15 @@ class baseModule {
 		}
 	}
 
+	/**
+	* Checks if the attribute values follow the LDAP syntax.
+	* Not every LDAP attribute allows UTF-8 strings. Therefore we do a syntax check here
+	* and change UTF-8 strings to ASCII strings if needed.
+	* The maximum length of the attributes is checked, too.
+	*
+	* @return mixed 0 if no errors/warnings occured, otherwise an array of status messages.
+	*/
 	function input_check() {
-		/* We have to some string checks now. Not every ldap attributes allow utf8
-		 * strings. Therefore we do a syntax check here and change utf8 strings to ascci
-		 * strings. Only "7bit" ascci is allowed
-		 * We check als the max length as defined in ldap.
-		*/
 		// Do a check for every ldap attribute
 		$attributes = array_keys($this->attributes);
 		for ($i=0; $i<count($attributes); $i++) {
@@ -543,22 +546,36 @@ class baseModule {
 				$_SESSION['ldap']->attributes[$attributes[$i]]['SYNTAX']=='1.3.6.1.4.1.1466.115.121.1.11') {
 				// found "7bit" ascii attribute
 				// convert utf8 in us-ascii
-				$convert = array ( 'ä' => 'ae', 'Ä' => 'Ae', 'ö' => 'Oe', 'ü' => 'ue', 'Ü' => 'ue',
-					'ß' => 'ss', 'é' => 'e', 'è' => 'e', 'ô' => 'o'
+				$convert = array ( 'ä' => 'ae', 'Ä' => 'Ae', 'ö' => 'Oe', 'ü' => 'ue', 'Ü' => 'Ue',
+					'ß' => 'ss', 'é' => 'e', 'è' => 'e', 'ô' => 'o', 'ç' => 'c'
 					);
 				$index = array_keys($convert);
-				for ($j=0; $j<count($this->attributes[$attributes[$i]]); $j++)
+				for ($j=0; $j<count($this->attributes[$attributes[$i]]); $j++) {
+					$replaced = false;
+					// replace special characters
 					for ($k=0; $k<count($index); $k++) {
 						$temp = str_replace($index[$k], $convert[$index[$k]], $this->attributes[$attributes[$i]][$j]);
 						if ($temp!=$this->attributes[$attributes[$i]][$j]) {
-							$this->attributes[$attributes[$i]][$j] = $temp;						
-							$messages[$attributes[$i]][] = array('WARN', _($attributes[$i]), _('Changed value because only ASCII characters are allowed.'));
+							$this->attributes[$attributes[$i]][$j] = $temp;
+							$replaced = true;
 						}
 					}
+					// remove remaining UTF-8 characters
+					for ($c = 0; $c < strlen($this->attributes[$attributes[$i]][$j]); $c++) {
+						if (ord($this->attributes[$attributes[$i]][$j][$c]) > 127) {
+							$this->attributes[$attributes[$i]][$j] = substr($this->attributes[$attributes[$i]][$j], 0, $c) .
+								substr($this->attributes[$attributes[$i]][$j], $c + 2);
+							$replaced = true;
+						}
+					}
+					if ($replaced) {
+						$messages[$attributes[$i]][] = array('WARN', _($attributes[$i]), _('Changed value because only ASCII characters are allowed.'));
+					}
+				}
 			}
 		// TODO length check
 		}
-	if (count($messages)!=0) return $messages;
+		if (count($messages)!=0) return $messages;
 		else return 0;
 	}