diff --git a/storage/netapp/restapi/mode/volumeusage.pm b/storage/netapp/restapi/mode/volumeusage.pm
index fb3d74d00..c6f4f500b 100644
--- a/storage/netapp/restapi/mode/volumeusage.pm
+++ b/storage/netapp/restapi/mode/volumeusage.pm
@@ -270,7 +270,7 @@ sub custom_deduplication_perfdata {
                                   min => 0, max => $self->{result_values}->{total});
 }
 
-sub custom_deduplicationn_threshold {
+sub custom_deduplication_threshold {
     my ($self, %options) = @_;
     
     my ($exit, $threshold_value);