diff --git a/plugins/emc/emc_vnx_block_lun_perfdata b/plugins/emc/emc_vnx_block_lun_perfdata
index 89f117cd..bfe686d7 100755
--- a/plugins/emc/emc_vnx_block_lun_perfdata
+++ b/plugins/emc/emc_vnx_block_lun_perfdata
@@ -98,7 +98,7 @@ fi
 
 #Choosing Cotrol Station. Code have to be "10"
 for CS in $cs_addr; do
-	if [ "$(eval $SSH_CHECK)" -eq "10" ]; then
+	if [[ "10" -eq "$(eval $SSH_CHECK)" ]]; then
 #		echo "$CS is Primary"
 		PRIMARY_CS=$CS
 		break