diff --git a/bin/FSHa.8xp b/bin/FSHa.8xp
index d815cde..deacd08 100644
Binary files a/bin/FSHa.8xp and b/bin/FSHa.8xp differ
diff --git a/includes/FshVar.asm b/includes/FshVar.asm
index 8c5fb42..a7d7077 100644
--- a/includes/FshVar.asm
+++ b/includes/FshVar.asm
@@ -7,6 +7,9 @@ fshvarset:
  push bc
  push de
  push hl
+  ld bc, FshVarsSize / 2 + 1
+  call cpBCDE
+  jr nc, fshvarsetOOBException
   ld bc, FshVars
   ex de, hl
    add hl, hl
@@ -14,6 +17,7 @@ fshvarset:
   ld (hl), e
   inc hl
   ld (hl), d
+fshvarsetOOBException:
  pop hl
  pop de
  pop bc
@@ -28,6 +32,10 @@ fshvarset:
 fshvarget:
  push bc
  push de
+  ld hl, 0
+  ld bc, FshVarsSize / 2 + 1
+  call cpBCDE
+  jr nc, fshvargetOOBException
   ld bc, FshVars
   ex de, hl
    add hl, hl
@@ -36,6 +44,7 @@ fshvarget:
   inc hl
   ld d, (hl)
   ex de, hl
+fshvargetOOBException:
  pop de
  pop bc
  ret
@@ -49,6 +58,9 @@ fshvarcpy:
  push bc
  push de
  push hl
+  ld bc, FshVarsSize / 2 + 1
+  call cpBCDE
+  jr nc, fshvarcpyOOBException
   ld bc, FshVars
    add hl, hl
    add hl, bc
@@ -61,6 +73,7 @@ fshvarcpy:
    inc hl
   ld a, (de)
   ld (hl), a
+fshvarcpyOOBException:
  pop hl
  pop de
  pop bc