diff --git a/avr/modules/lcd2/win/object.asm b/avr/modules/lcd2/win/object.asm
index e857e3f..544b4c2 100644
--- a/avr/modules/lcd2/win/object.asm
+++ b/avr/modules/lcd2/win/object.asm
@@ -25,8 +25,8 @@ OBJ_Init:
     mov xh, yh
     clr r16
     ldi r17, OBJ_OFFS_SIZE
-    rcall Utils_FillSram               ; (R17, X)
-    rcall Tree_InitObject              ; (R16)
+    bigcall Utils_FillSram             ; (R17, X)
+    bigcall Tree_InitObject            ; (R16)
   pop r17
   std Y+OBJ_OFFS_OPTIONS, r17
   ldi r16, LOW(OBJ_DefaultHandler)
@@ -480,7 +480,7 @@ objFreeTimers:
 OBJ_Link_new:
   ldi r24, LOW(OBJ_LINK_SIZE)
   ldi r25, HIGH(OBJ_LINK_SIZE)
-  rcall Heap_Alloc
+  bigcall Heap_Alloc
   brcc OBJ_Link_new_end
   mov yl, xl
   mov yh, xh
@@ -522,7 +522,7 @@ OBJ_Link_free:
 OBJ_Timer_new:
   ldi r24, LOW(TIMER_SIZE)
   ldi r25, HIGH(TIMER_SIZE)
-  rcall Heap_Alloc
+  bigcall Heap_Alloc
   brcc OBJ_Timer_new_end
   mov yl, xl
   mov yh, xh
@@ -547,7 +547,7 @@ OBJ_Timer_free:
   rcall List_FiniObject  ; (R16)
   mov xl, yl
   mov xh, yh
-  rcall Heap_free        ; (r16, r17, r24, r25, X)
+  bigcall Heap_free      ; (r16, r17, r24, r25, X)
   clc
   ret
 ; @end