diff --git a/handler/checker/tasks/observer/cluster/sys_log_level.yaml b/handler/checker/tasks/observer/cluster/sys_log_level.yaml
index 1d67338c..1063d34e 100644
--- a/handler/checker/tasks/observer/cluster/sys_log_level.yaml
+++ b/handler/checker/tasks/observer/cluster/sys_log_level.yaml
@@ -6,9 +6,8 @@ task:
       sql: 'SELECT value FROM  oceanbase.__all_virtual_sys_parameter_stat where name  like "%syslog_level%";'
       result:
         set_value: sys_log_level
-        verify_type: equal
         report_type: warning
-        verify: '[[ ${sys_log_level} == "WDIAG"]]'
+        verify: '[[ $sys_log_level == "WDIAG" ]]'
         err_msg: "on 4.x, the recommended value for sys_log_level is WDIAG"
 
   - version: "[3.0.0,4.0.0.0)"
@@ -17,7 +16,6 @@ task:
       sql: 'SELECT value FROM  oceanbase.__all_virtual_sys_parameter_stat where name  like "%syslog_level%";'
       result:
         set_value: sys_log_level
-        verify_type: equal
         report_type: warning
-        verify: '[[ ${sys_log_level} == "INFO"]]'
+        verify: '[[ $sys_log_level == "INFO" ]]'
         err_msg: "on 3.x, the recommended value for sys_log_level is INFO"
diff --git a/handler/checker/tasks/observer/system/core_pattern.yaml b/handler/checker/tasks/observer/system/core_pattern.yaml
index ba0e3f9a..a226347f 100644
--- a/handler/checker/tasks/observer/system/core_pattern.yaml
+++ b/handler/checker/tasks/observer/system/core_pattern.yaml
@@ -5,7 +5,5 @@ task:
         parameter: kernel.core_pattern
         result:
           set_value: core_pattern
-          verify: "[[ $core_pattern == *" "* ]]"
+          verify: '[[ $core_pattern == *" "* ]]'
           err_msg: 'clock_source: #{clock_source}. recommended: tsc. Uneven CPU utilization during pressure testing resulted in low TPS during pressure testing'
-
-