diff --git a/sol/sol_manager.hpp b/sol/sol_manager.hpp
index a7e4a1c..e756574 100644
--- a/sol/sol_manager.hpp
+++ b/sol/sol_manager.hpp
@@ -33,13 +33,7 @@
     CustomFD(int fd) :
         fd(fd) {}
 
-    ~CustomFD()
-    {
-        if(fd >=0)
-        {
-            close(fd);
-        }
-    }
+    ~CustomFD();
 
     int operator()() const
     {