diff --git a/snmp/smart b/snmp/smart
index 309d8f8..75a02ff 100755
--- a/snmp/smart
+++ b/snmp/smart
@@ -319,7 +319,7 @@ foreach my $line ( @disks ){
 
 			# 9, power on hours
 			if ( $id == 9 ) {
-				my @runtime=split(/\ /, $raw);
+				my @runtime=split(/[\ h]/, $raw);
 				$IDs{$id}=$runtime[0];
 			}