diff --git a/sessionctx/variable/tidb_vars.go b/sessionctx/variable/tidb_vars.go
index ee6253052535c..813fd8d9e89d0 100644
--- a/sessionctx/variable/tidb_vars.go
+++ b/sessionctx/variable/tidb_vars.go
@@ -1258,7 +1258,7 @@ const (
 	DefTiDBEnableFastReorg                         = true
 	DefTiDBDDLDiskQuota                            = 100 * 1024 * 1024 * 1024 // 100GB
 	DefExecutorConcurrency                         = 5
-	DefTiDBEnableNonPreparedPlanCache              = false
+	DefTiDBEnableNonPreparedPlanCache              = true
 	DefTiDBEnableNonPreparedPlanCacheForDML        = false
 	DefTiDBNonPreparedPlanCacheSize                = 100
 	DefTiDBPlanCacheMaxPlanSize                    = 2 * size.MB