diff --git a/plugins/libkolab/bin/modcache.sh b/plugins/libkolab/bin/modcache.sh
index 2fa47d83..8208b6cb 100755
--- a/plugins/libkolab/bin/modcache.sh
+++ b/plugins/libkolab/bin/modcache.sh
@@ -43,7 +43,7 @@ function print_usage()
 }
 
 // read arguments
-$opts = get_opt(array(
+$opts = rcube_utils::get_opt(array(
     'a' => 'all',
     'h' => 'host',
     'u' => 'user',
diff --git a/plugins/libkolab/bin/randomcontacts.sh b/plugins/libkolab/bin/randomcontacts.sh
index e4a820c9..e6154bbc 100755
--- a/plugins/libkolab/bin/randomcontacts.sh
+++ b/plugins/libkolab/bin/randomcontacts.sh
@@ -41,7 +41,7 @@ function print_usage()
 }
 
 // read arguments
-$opts = get_opt(array(
+$opts = rcube_utils::get_opt(array(
     'n' => 'num',
     'h' => 'host',
     'u' => 'user',
diff --git a/plugins/libkolab/bin/readcache.sh b/plugins/libkolab/bin/readcache.sh
index 7e6a3a3e..238741fb 100755
--- a/plugins/libkolab/bin/readcache.sh
+++ b/plugins/libkolab/bin/readcache.sh
@@ -39,7 +39,7 @@ function print_usage()
 }
 
 // read arguments
-$opts = get_opt(array(
+$opts = rcube_utils::get_opt(array(
     'h' => 'host',
     'l' => 'limit',
     'v' => 'verbose',