diff --git a/rtl/linux/ossysc.inc b/rtl/linux/ossysc.inc
index cac057c4c5..ad360c4d72 100644
--- a/rtl/linux/ossysc.inc
+++ b/rtl/linux/ossysc.inc
@@ -142,7 +142,7 @@ end;
 function Fpopendir(dirname : pchar): pdir;  [public, alias : 'FPC_SYSC_OPENDIR'];
 
 var
-  fd:integer;
+  fd:cint;
   st:stat;
   ptr:pdir;