diff --git a/libretro/libretro.c b/libretro/libretro.c
index 984a38679..82acf45dc 100644
--- a/libretro/libretro.c
+++ b/libretro/libretro.c
@@ -529,7 +529,7 @@ static void boot_rom_load(GB_gameboy_t *gb, GB_boot_rom_t type)
         [GB_BOOT_ROM_AGB] = agb_boot_length,
     }[type];
 
-    char buf[256];
+    char buf[4096 + 1 + 4 + 9 + 1];
     snprintf(buf, sizeof(buf), "%s%c%s_boot.bin", retro_system_directory, slash, model_name);
     log_cb(RETRO_LOG_INFO, "Initializing as model: %s\n", model_name);
     log_cb(RETRO_LOG_INFO, "Loading boot image: %s\n", buf);