diff --git a/constants/SP2000.inc b/constants/SP2000.inc
index da225e1..8498597 100644
--- a/constants/SP2000.inc
+++ b/constants/SP2000.inc
@@ -1197,7 +1197,7 @@ FL_N_7                  EQU #5CE4
 FL_TYPE                 EQU #5CE5
 FL_START                EQU #5CE6
 FL_LEN                  EQU #5CE8
-START_CLASTER           EQU ZX_VARS.FL_LEN
+START_CLUSTER           EQU ZX_VARS.FL_LEN
 FL_SIZE                 EQU #5CEA
 FL_PLACE                EQU #5CEB
 VAR_2                   EQU #5CED
@@ -1239,7 +1239,7 @@ DOS_SP                  EQU #5D1C
 FL_NUMBER               EQU #5D1E
 COM_LN_COPY             EQU #5D20
 L_5D23                  EQU #5D23
-BUFER                   EQU #5D25
+BUFFER			EQU #5D25
 AUTO_5D33               EQU #5D33
 CLEAR_SEC               EQU #5E06
 CLEAR_TRK               EQU #5E07
@@ -1252,7 +1252,7 @@ DISK_ALT_NM             EQU #5E10
 N_DEL_FL                EQU #5E19
 DISK_NAME               EQU #5E1A
 ;
-BUFER_RD               EQU ZX_VARS.BUFER      ; tr-dos buffer
+BUFER_RD		EQU ZX_VARS.BUFFER      ; tr-dos buffer
 ;
 MENU_TBL:
 .JUMP                  EQU #F6EA