diff --git a/debug/cap.go b/debug/cap.go
new file mode 100644
index 0000000..458bb48
--- /dev/null
+++ b/debug/cap.go
@@ -0,0 +1,5 @@
+package debug
+
+var (
+	DebugCap uint32
+)
diff --git a/debug/db_yes.go b/debug/db_yes.go
index fa8186e..c323366 100644
--- a/debug/db_yes.go
+++ b/debug/db_yes.go
@@ -37,6 +37,10 @@ var (
 	}
 )
 
+func init() {
+	DebugCap |= 1
+}
+
 func typToString(v common.DataTyp) string {
 	return dbTypStr[v]
 }