diff --git a/session/bootstrap.go b/session/bootstrap.go
index 2244e3eaa5484..e5c588ec5af01 100644
--- a/session/bootstrap.go
+++ b/session/bootstrap.go
@@ -1764,8 +1764,8 @@ func doDMLWorks(s Session) {
 	// Init global system variables table.
 	values := make([]string, 0, len(variable.GetSysVars()))
 	for k, v := range variable.GetSysVars() {
-		// Session only variable should not be inserted.
-		if v.Scope != variable.ScopeSession {
+		// Only global variables should be inserted.
+		if v.HasGlobalScope() {
 			vVal := v.Value
 			if v.Name == variable.TiDBTxnMode && config.GetGlobalConfig().Store == "tikv" {
 				vVal = "pessimistic"
diff --git a/session/bootstrap_serial_test.go b/session/bootstrap_serial_test.go
index 1de04a5ca91f3..6caf7e702c10b 100644
--- a/session/bootstrap_serial_test.go
+++ b/session/bootstrap_serial_test.go
@@ -113,7 +113,7 @@ func TestBootstrap(t *testing.T) {
 func globalVarsCount() int64 {
 	var count int64
 	for _, v := range variable.GetSysVars() {
-		if v.Scope != variable.ScopeSession {
+		if v.HasGlobalScope() {
 			count++
 		}
 	}