diff --git a/programs/games/nsider/kolibrisys/memalloc.asm b/programs/games/nsider/kolibrisys/memalloc.asm
index 40d7c4378a..446d453f7e 100644
--- a/programs/games/nsider/kolibrisys/memalloc.asm
+++ b/programs/games/nsider/kolibrisys/memalloc.asm
@@ -9,30 +9,36 @@ public _realloc
 align 4
 _malloc:
 
+        push ebx
         mov eax,68
         mov ebx,12
-	mov ecx,[esp+4] ;size
+	mov ecx,[esp+8] ;size
         int 0x40
+        pop ebx
 
         ret 4
 
 align 4
 _free:
 
+        push ebx
         mov eax,68
         mov ebx,13
-	mov ecx,[esp+4]
+	mov ecx,[esp+8]
         int 0x40
+        pop ebx
 
         ret 4
 
 align 4
 _realloc:
 
+        push ebx
         mov ebx,20
         mov eax,68
-	mov ecx,[esp+4]
-	mov edx,[esp+8]
+	mov ecx,[esp+8]
+	mov edx,[esp+12]
         int 0x40
+        pop ebx
 
         ret 8