diff --git a/compiler/systems/i_embed.pas b/compiler/systems/i_embed.pas
index f805c3eb72..8b08709623 100644
--- a/compiler/systems/i_embed.pas
+++ b/compiler/systems/i_embed.pas
@@ -776,7 +776,7 @@ unit i_embed;
                 recordalignmax       : 1;
                 maxCrecordalign      : 1
               );
-            first_parm_offset : 0;
+            first_parm_offset : 4;
             stacksize    : 1024;
             stackalign   : 1;
             abi : abi_default;
diff --git a/compiler/z80/cpupara.pas b/compiler/z80/cpupara.pas
index 7053cee704..da9aee81f1 100644
--- a/compiler/z80/cpupara.pas
+++ b/compiler/z80/cpupara.pas
@@ -376,7 +376,7 @@ unit cpupara;
                      if paraloc^.loc=LOC_REFERENCE then
                        begin
                          paraloc^.reference.index:=NR_FRAME_POINTER_REG;
-                         inc(paraloc^.reference.offset,2);
+                         inc(paraloc^.reference.offset,target_info.first_parm_offset);
                        end;
                    end;
                  firstparaloc:=false;