diff --git a/patches/GxEPD2_HAL.patch b/patches/GxEPD2_HAL.patch
index 328ec708..d7b394eb 100644
--- a/patches/GxEPD2_HAL.patch
+++ b/patches/GxEPD2_HAL.patch
@@ -1,5 +1,5 @@
 diff --git a/src/GxEPD2_EPD.cpp b/src/GxEPD2_EPD.cpp
-index 8df8bef..19b210c 100644
+index 8df8bef..e9dfb19 100644
 --- a/src/GxEPD2_EPD.cpp
 +++ b/src/GxEPD2_EPD.cpp
 @@ -17,11 +17,10 @@
@@ -140,7 +140,7 @@ index 8df8bef..19b210c 100644
 -  if (_cs >= 0) digitalWrite(_cs, HIGH);
 -  if (_dc >= 0) digitalWrite(_dc, HIGH);
 -  _pSPIx->endTransaction();
-+  _hal->write(c);
++  _hal->writeCmd(c);
  }
  
  void GxEPD2_EPD::_writeData(uint8_t d)
@@ -313,10 +313,10 @@ index 34c1145..1e8ea64 100644
  
 diff --git a/src/GxEPD2_Hal.h b/src/GxEPD2_Hal.h
 new file mode 100644
-index 0000000..cb8fb9d
+index 0000000..13424b6
 --- /dev/null
 +++ b/src/GxEPD2_Hal.h
-@@ -0,0 +1,18 @@
+@@ -0,0 +1,19 @@
 +#pragma once
 +
 +class GxEPD2_HalInterface {
@@ -329,6 +329,7 @@ index 0000000..cb8fb9d
 +        virtual void write(uint8_t buf) = 0;
 +        virtual void write(const uint8_t *buf, uint16_t n) = 0;
 +        virtual void write(const uint8_t *buf, uint16_t n, int16_t fill_with_zeroes) = 0;
++        virtual void writeCmd(const uint8_t val) = 0;
 +        virtual void writeCmd(const uint8_t* pCommandData, uint8_t datalen, bool isPGM) = 0;
 +
 +        virtual void startTransfer(void) = 0;