diff --git a/rtl/linux/ostypes.inc b/rtl/linux/ostypes.inc
index 79f8b56bbe..4f7a56cef9 100644
--- a/rtl/linux/ostypes.inc
+++ b/rtl/linux/ostypes.inc
@@ -382,11 +382,20 @@ CONST
   F_SetFd  = 2;
   F_GetFl  = 3;
   F_SetFl  = 4;
+
+{$if defined(cpusparc) or defined(cpusparc64)}
+  F_GetLk  = 7;
+  F_SetLk  = 8;
+  F_SetLkW = 9;
+  F_SetOwn = 5;
+  F_GetOwn = 6;
+{$else}
   F_GetLk  = 5;
   F_SetLk  = 6;
   F_SetLkW = 7;
   F_SetOwn = 8;
   F_GetOwn = 9;
+{$endif}
 
 { getrlimit/ugetrlimit resource parameter constants }
 const
diff --git a/tests/tbs/tb0561a.pp b/tests/tbs/tb0561a.pp
index 75eb52f243..d2a8d44001 100644
--- a/tests/tbs/tb0561a.pp
+++ b/tests/tbs/tb0561a.pp
@@ -8,9 +8,16 @@ program test;
 Uses    cthreads, Classes, SysUtils, BaseUnix;
 
 Const   Fn      = '/tmp/fpctest.lock';
+
+{$if defined(cpusparc) or defined(cpusparc64)}
+     F_RDLCK = 1;
+     F_WRLCK = 2;
+     F_UNLCK = 3;
+{$else}
      F_RDLCK = 0;
      F_WRLCK = 1;
      F_UNLCK = 2;
+{$endif}
 
 Var     F, I    : Integer;
      Region  : FLock;
diff --git a/tests/tbs/tb0561b.pp b/tests/tbs/tb0561b.pp
index f9df1c35c9..0546b15d32 100644
--- a/tests/tbs/tb0561b.pp
+++ b/tests/tbs/tb0561b.pp
@@ -10,9 +10,15 @@ Uses    cthreads, Classes, SysUtils, BaseUnix;
   support locking
 }
 Const   Fn      = '/tmp/fpctest.lock';
+{$if defined(cpusparc) or defined(cpusparc64)}
+     F_RDLCK = 1;
+     F_WRLCK = 2;
+     F_UNLCK = 3;
+{$else}
      F_RDLCK = 0;
      F_WRLCK = 1;
      F_UNLCK = 2;
+{$endif}
 
 Var     F, I    : Integer;
      Region  : FLock;