diff --git a/cherryusb_config_template.h b/cherryusb_config_template.h
index 4f0517bc..a7ce3c14 100644
--- a/cherryusb_config_template.h
+++ b/cherryusb_config_template.h
@@ -266,7 +266,7 @@
  * (largest USB packet used / 4) + 1 for status information + 1 transfer complete +
  * 1 location each for Bulk/Control endpoint for handling NAK/NYET scenario
  */
-// #define CONFIG_USB_DWC2_RX_FIFO_SIZE ((1012 - CONFIG_USB_DWC2_NPTX_FIFO_SIZE - CONFIG_USB_DWC2_PTX_FIFO_SIZE) / 4)
+// #define CONFIG_USB_DWC2_RX_FIFO_SIZE ((1012 - CONFIG_USB_DWC2_NPTX_FIFO_SIZE - CONFIG_USB_DWC2_PTX_FIFO_SIZE))
 
 /* ---------------- MUSB Configuration ---------------- */
 // #define CONFIG_USB_MUSB_SUNXI
diff --git a/osal/idf/usb_config.h b/osal/idf/usb_config.h
index a3d79456..f2cf940a 100644
--- a/osal/idf/usb_config.h
+++ b/osal/idf/usb_config.h
@@ -249,7 +249,7 @@
  * (largest USB packet used / 4) + 1 for status information + 1 transfer complete +
  * 1 location each for Bulk/Control endpoint for handling NAK/NYET scenario
  */
-#define CONFIG_USB_DWC2_RX_FIFO_SIZE ((200 - CONFIG_USB_DWC2_NPTX_FIFO_SIZE - CONFIG_USB_DWC2_PTX_FIFO_SIZE) / 4)
+#define CONFIG_USB_DWC2_RX_FIFO_SIZE ((200 - CONFIG_USB_DWC2_NPTX_FIFO_SIZE - CONFIG_USB_DWC2_PTX_FIFO_SIZE))
 
 #elif CONFIG_IDF_TARGET_ESP32C5 || CONFIG_IDF_TARGET_ESP32P4
 // todo: check c5, p4 in later
diff --git a/port/dwc2/usb_hc_dwc2.c b/port/dwc2/usb_hc_dwc2.c
index 7c86b873..76cb78c8 100644
--- a/port/dwc2/usb_hc_dwc2.c
+++ b/port/dwc2/usb_hc_dwc2.c
@@ -26,7 +26,7 @@
  * 1 location each for Bulk/Control endpoint for handling NAK/NYET scenario
  */
 #ifndef CONFIG_USB_DWC2_RX_FIFO_SIZE
-#define CONFIG_USB_DWC2_RX_FIFO_SIZE ((1012 - CONFIG_USB_DWC2_NPTX_FIFO_SIZE - CONFIG_USB_DWC2_PTX_FIFO_SIZE) / 4)
+#define CONFIG_USB_DWC2_RX_FIFO_SIZE ((1012 - CONFIG_USB_DWC2_NPTX_FIFO_SIZE - CONFIG_USB_DWC2_PTX_FIFO_SIZE))
 #endif
 
 #define USB_OTG_GLB     ((DWC2_GlobalTypeDef *)(bus->hcd.reg_base))