diff --git a/rtl/bsd/ossysc.inc b/rtl/bsd/ossysc.inc
index 246ba744cd..1ecd145327 100644
--- a/rtl/bsd/ossysc.inc
+++ b/rtl/bsd/ossysc.inc
@@ -545,3 +545,13 @@ begin
   fpreadlink:=do_syscall(syscall_nr_readlink, TSysParam(name),TSysParam(linkname),maxlen);
 end;
 
+function FpGetRLimit(resource:cint;rlim:PRLimit):cint; [public, alias : 'FPC_SYSC_GETRLIMIT'];
+begin
+  fpgetrlimit:=do_syscall(syscall_nr_getrlimit,TSysParam(Resource),TSysParam(rlim));
+end;
+
+function FpSetRLimit(Resource:cint;rlim:PRLimit):cint; [public, alias : 'FPC_SYSC_SETRLIMIT'];
+begin
+  fpsetrlimit:=do_syscall(syscall_nr_getrlimit,TSysParam(Resource),TSysParam(rlim));
+end;
+
diff --git a/rtl/freebsd/sysnr.inc b/rtl/freebsd/sysnr.inc
index ae330db77f..4b2e2f54e1 100644
--- a/rtl/freebsd/sysnr.inc
+++ b/rtl/freebsd/sysnr.inc
@@ -337,5 +337,7 @@ syscall_nr_getdirentries                =196;
  syscall_nr_kse_thr_interrupt           = 382;
  syscall_nr_kse_release                 = 383;
  syscall_nr_kse_switchin                = 440;
+ syscall_nr_getrlimit                   = 194;
+ syscall_nr_setrlimit                   = 195;
 
 
diff --git a/rtl/linux/system.pp b/rtl/linux/system.pp
index 198f3fbcb3..6508aa42ad 100644
--- a/rtl/linux/system.pp
+++ b/rtl/linux/system.pp
@@ -302,6 +302,13 @@ begin
  GetProcessID := SizeUInt (fpGetPID);
 end;
 
+{$ifdef FPC_USE_LIBC}
+{$ifdef HAS_UGETRLIMIT}
+    { there is no ugetrlimit libc call, just map it to the getrlimit call in these cases }
+function FpUGetRLimit(resource : cInt; rlim : PRLimit) : cInt; cdecl; external clib name 'getrlimit';
+{$endif}
+{$endif}
+
 function CheckInitialStkLen(stklen : SizeUInt) : SizeUInt;
 var
   limits : TRLimit;
diff --git a/rtl/unix/oscdeclh.inc b/rtl/unix/oscdeclh.inc
index 5be1403572..91af837527 100644
--- a/rtl/unix/oscdeclh.inc
+++ b/rtl/unix/oscdeclh.inc
@@ -134,10 +134,6 @@ const
 //    function  fpsettimeofday(tp:ptimeval;tzp:ptimezone):cint;
 {$endif}
     function FpGetRLimit(resource : cInt; rlim : PRLimit) : cInt; cdecl; external clib name 'getrlimit';
-    {$ifdef HAS_UGETRLIMIT}
-    { there is no ugetrlimit libc call, just map it to the getrlimit call in these cases }
-    function FpUGetRLimit(resource : cInt; rlim : PRLimit) : cInt; cdecl; external clib name 'getrlimit';
-    {$endif}
 
 {$ifdef linux}
 {$ifndef FPC_IS_SYSTEM}