diff --git a/server/adminserver/middleware/actlog.go b/server/adminserver/middleware/actlog.go
index fd7102c3..d2c52dd4 100644
--- a/server/adminserver/middleware/actlog.go
+++ b/server/adminserver/middleware/actlog.go
@@ -60,6 +60,9 @@ func ActLog(c *gin.Context) bool {
 		var bodyBytes []byte
 		bodyBytes, err := io.ReadAll(c.Request.Body)
 		if err == nil {
+			if len(bodyBytes) > 16*1024*1024 {
+				return false
+			}
 			c.Request.Body = io.NopCloser(bytes.NewBuffer(bodyBytes))
 			info.Postdata = string(bodyBytes)
 		}