diff --git a/compiler/avr/cgcpu.pas b/compiler/avr/cgcpu.pas
index dbd50b6ea8..72402d6552 100644
--- a/compiler/avr/cgcpu.pas
+++ b/compiler/avr/cgcpu.pas
@@ -309,7 +309,7 @@ unit cgcpu;
 
     procedure tcgavr.a_load_ref_cgpara(list : TAsmList;size : tcgsize;const r : treference;const paraloc : TCGPara);
       var
-        tmpref, ref: treference;
+        tmpref: treference;
         location: pcgparalocation;
         sizeleft: tcgint;
         i: Integer;
@@ -326,7 +326,6 @@ unit cgcpu;
                 a_load_ref_reg(list,location^.size,location^.size,tmpref,location^.register);
               LOC_REFERENCE:
                 begin
-                  ref:=tmpref;
                   for i:=1 to sizeleft do
                     begin
                       tmpreg:=getintregister(list,OS_8);
@@ -2442,7 +2441,7 @@ unit cgcpu;
       var
         countreg,tmpreg,tmpreg2: tregister;
         srcref,dstref : treference;
-        copysize,countregsize : tcgsize;
+        countregsize : tcgsize;
         l : TAsmLabel;
         i : longint;
         SrcQuickRef, DestQuickRef : Boolean;
@@ -2458,7 +2457,6 @@ unit cgcpu;
             dstref.base:=NR_R26;
             dstref.addressmode:=AM_POSTINCREMENT;
 
-            copysize:=OS_8;
             if len<256 then
               countregsize:=OS_8
             else if len<65536 then
diff --git a/compiler/avr/cpupara.pas b/compiler/avr/cpupara.pas
index 3c87f39225..45d6cd1c19 100644
--- a/compiler/avr/cpupara.pas
+++ b/compiler/avr/cpupara.pas
@@ -201,7 +201,6 @@ unit cpupara;
         paracgsize   : tcgsize;
         paralen : longint;
         i : integer;
-        firstparaloc: boolean;
 
       procedure assignintreg;
         begin
@@ -300,7 +299,6 @@ unit cpupara;
              if paralen=0 then
                internalerror(200410311);
 {$endif EXTDEBUG}
-             firstparaloc:=true;
              if loc=LOC_REGISTER then
                begin
                  { the lsb is located in the register with the lowest number,
@@ -386,7 +384,6 @@ unit cpupara;
                          inc(paraloc^.reference.offset,2);
                        end;
                    end;
-                 firstparaloc:=false;
                end;
           end;
         curfloatreg:=nextfloatreg;
diff --git a/compiler/rgobj.pas b/compiler/rgobj.pas
index 081a942dc5..c60d4faf48 100644
--- a/compiler/rgobj.pas
+++ b/compiler/rgobj.pas
@@ -1692,7 +1692,9 @@ unit rgobj;
         colourednodes : Tsuperregisterset;
         adj_colours:set of 0..255;
         found : boolean;
+{$if declared(RS_STACK_POINTER_REG) and (RS_STACK_POINTER_REG<>RS_INVALID)}
         tmpr: tregister;
+{$endif}
     begin
       spillednodes.clear;
       {Reset colours}
@@ -1716,11 +1718,11 @@ unit rgobj;
                 if supregset_in(colourednodes,a) and (reginfo[a].colour<=255) then
                   include(adj_colours,reginfo[a].colour);
               end;
+          { e.g. AVR does not have a stack pointer register }
+{$if declared(RS_STACK_POINTER_REG) and (RS_STACK_POINTER_REG<>RS_INVALID)}
           { FIXME: temp variable r is needed here to avoid Internal error 20060521 }
           {        while compiling the compiler. }
           tmpr:=NR_STACK_POINTER_REG;
-          { e.g. AVR does not have a stack pointer register }
-{$if declared(RS_STACK_POINTER_REG) and (RS_STACK_POINTER_REG<>RS_INVALID)}
           if (regtype=getregtype(tmpr)) then
             include(adj_colours,RS_STACK_POINTER_REG);
 {$ifend}