@@ -, +, @@ 
---
--- a/univention-licence/lib/license_ldap.c	
+++ a/univention-licence/lib/license_ldap.c	
@@ -145,10 +145,10 @@ lObj* univention_license_ldap_search_licenseObject(const char* searchBaseDN, con
 	int scope    = LDAP_SCOPE_ONELEVEL;
 	
 	//build searchfilter
-	filter_len = strlen("univentionLicenseModule=") + strlen(licensetyp);
+	filter_len = strlen("(&(objectClass=univentionLicense)(univentionLicenseModule=") + strlen(licensetyp) + strlen("))");
 	filter = malloc(sizeof(char) * filter_len + 1);
 	filter[filter_len] = 0;
-	sprintf(filter,"univentionLicenseModule=%s", licensetyp);
+	sprintf(filter,"(&(objectClass=univentionLicense)(univentionLicenseModule=%s))", licensetyp);
 	
 	ret = univention_license_ldap_get(searchBaseDN, scope, filter, attr, "univentionLicense", num);
 	
--