diff --git a/rtl/linux/xtensa/si_c.inc b/rtl/linux/xtensa/si_c.inc
index ae55f1bee2..2d5688ca34 100644
--- a/rtl/linux/xtensa/si_c.inc
+++ b/rtl/linux/xtensa/si_c.inc
@@ -53,7 +53,7 @@ procedure _FPC_proc_start; assembler; public name '_start';
 
 procedure _FPC_xtensa_exit(e:longint); assembler;
   asm
-    mov a6,a3
+    mov a6,a2
     movi a2,119
     syscall
   end;
diff --git a/rtl/linux/xtensa/si_dll.inc b/rtl/linux/xtensa/si_dll.inc
index cedcccc59f..5da7276798 100644
--- a/rtl/linux/xtensa/si_dll.inc
+++ b/rtl/linux/xtensa/si_dll.inc
@@ -32,7 +32,7 @@ procedure _FPC_shared_lib_start(argc : dword;argv,envp : pointer); cdecl; public
 procedure _FPC_shared_lib_haltproc(e:longint); cdecl; assembler; public name '_haltproc';
   asm
   .L1:
-    mov a6,a3
+    mov a6,a2
     movi a2,119
     syscall
     j .L1
diff --git a/rtl/linux/xtensa/si_prc.inc b/rtl/linux/xtensa/si_prc.inc
index 99973ae58a..6d72de1025 100644
--- a/rtl/linux/xtensa/si_prc.inc
+++ b/rtl/linux/xtensa/si_prc.inc
@@ -55,7 +55,7 @@ procedure _FPC_dynamic_proc_start; assembler; public name '_dynamic_start';
 procedure _FPC_xtensa_exit(e:longint); assembler;
   asm
   .L1:
-    mov a6,a3
+    mov a6,a2
     movi a2,119
     syscall
     j .L1
diff --git a/rtl/linux/xtensa/si_uc.inc b/rtl/linux/xtensa/si_uc.inc
index 62ac82e33d..1c721e7bbf 100644
--- a/rtl/linux/xtensa/si_uc.inc
+++ b/rtl/linux/xtensa/si_uc.inc
@@ -92,7 +92,7 @@ procedure _FPC_proc_start; assembler; public name '_start';
 
 procedure _FPC_xtensa_exit(e:longint); assembler;
   asm
-    mov a6,a3
+    mov a6,a2
     movi a2,119
     syscall
   end;