diff --git a/src/lgfx/v1/platforms/esp32/Bus_QSPI.cpp b/src/lgfx/v1/platforms/esp32/Bus_QSPI.cpp
index 8cb71164..ccdd126c 100644
--- a/src/lgfx/v1/platforms/esp32/Bus_QSPI.cpp
+++ b/src/lgfx/v1/platforms/esp32/Bus_QSPI.cpp
@@ -20,6 +20,9 @@
 
 #include "Bus_QSPI.hpp"
 
+#if defined LGFX_USE_QSPI
+
+
 /// ESP32-S3をターゲットにした際にREG_SPI_BASEが定義されていなかったので応急処置 ;
 #if defined ( CONFIG_IDF_TARGET_ESP32S3 )
  #if !defined( REG_SPI_BASE )
@@ -1101,3 +1104,4 @@ namespace lgfx
 }
 
 #endif
+#endif
diff --git a/src/lgfx/v1/platforms/esp32/Bus_QSPI.hpp b/src/lgfx/v1/platforms/esp32/Bus_QSPI.hpp
index e9f91605..1c261dc5 100644
--- a/src/lgfx/v1/platforms/esp32/Bus_QSPI.hpp
+++ b/src/lgfx/v1/platforms/esp32/Bus_QSPI.hpp
@@ -56,6 +56,10 @@
 #include "../../Bus.hpp"
 #include "../common.hpp"
 
+
+#if defined LGFX_USE_QSPI
+
+
 namespace lgfx
 {
     inline namespace v1
@@ -212,3 +216,5 @@ namespace lgfx
         //----------------------------------------------------------------------------
     }
 }
+
+#endif
diff --git a/src/lgfx/v1/platforms/esp32/common.cpp b/src/lgfx/v1/platforms/esp32/common.cpp
index b019a1a9..62d19c80 100644
--- a/src/lgfx/v1/platforms/esp32/common.cpp
+++ b/src/lgfx/v1/platforms/esp32/common.cpp
@@ -534,6 +534,7 @@ namespace lgfx
 
 
 
+#if defined LGFX_USE_QSPI
 
     cpp::result<void, error_t> initQuad(int spi_host, int spi_sclk, int spi_io0, int spi_io1, int spi_io2, int spi_io3)
     {
@@ -620,8 +621,7 @@ namespace lgfx
     }
 
 
-
-
+#endif
 
 
 
diff --git a/src/lgfx/v1/platforms/esp32/common.hpp b/src/lgfx/v1/platforms/esp32/common.hpp
index 37550496..7151b1dc 100644
--- a/src/lgfx/v1/platforms/esp32/common.hpp
+++ b/src/lgfx/v1/platforms/esp32/common.hpp
@@ -48,6 +48,7 @@ Original Source:
  #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
   #define LGFX_IDF_V5
  #endif
+ #define LGFX_USE_QSPI
 #endif
 
 namespace lgfx
@@ -258,7 +259,9 @@ namespace lgfx
   namespace spi
   {
     cpp::result<void, error_t> init(int spi_host, int spi_sclk, int spi_miso, int spi_mosi, int dma_channel);
+#if defined LGFX_USE_QSPI
     cpp::result<void, error_t> initQuad(int spi_host, int spi_sclk, int spi_io0, int spi_io1, int spi_io2, int spi_io3, int dma_channel);
+#endif
     void beginTransaction(int spi_host);
   }
 
diff --git a/src/lgfx/v1_init.hpp b/src/lgfx/v1_init.hpp
index d04f922e..a7fd0fc7 100644
--- a/src/lgfx/v1_init.hpp
+++ b/src/lgfx/v1_init.hpp
@@ -48,7 +48,6 @@ Original Source:
 #include "v1/panel/Panel_ST7735.hpp"
 #include "v1/panel/Panel_ST7789.hpp"
 #include "v1/panel/Panel_ST7796.hpp"
-#include "v1/panel/Panel_SH8601Z.hpp"
 
 // EPD
 #include "v1/panel/Panel_GDEW0154M09.hpp"
diff --git a/src/lgfx_user/LGFX_Monica.hpp b/src/lgfx_user/LGFX_Monica.hpp
index 128ae577..681ab115 100644
--- a/src/lgfx_user/LGFX_Monica.hpp
+++ b/src/lgfx_user/LGFX_Monica.hpp
@@ -10,6 +10,7 @@
  */
 #pragma once
 #include <LovyanGFX.hpp>
+#include <lgfx/v1/panel/Panel_SH8601Z.hpp>
 
 
 /// 独自の設定を行うクラスを、LGFX_Deviceから派生して作成します。