diff --git a/xCAT-test/autotest/testcase/switchdiscover/cases0 b/xCAT-test/autotest/testcase/switchdiscover/cases0
index abf7220a3..1009f74b3 100644
--- a/xCAT-test/autotest/testcase/switchdiscover/cases0
+++ b/xCAT-test/autotest/testcase/switchdiscover/cases0
@@ -5,7 +5,7 @@ cmd:switchdiscover -h
 check:rc==0
 check:output=~Usage
 end
-start:switchdiscover_range_default 
+start:switchdiscover_range_default
 cmd:switchdiscover --range $$range
 check:rc==0
 check:output=~Discovering switches using nmap