diff --git a/extras/mcufriend_how_to.txt b/extras/mcufriend_how_to.txt
index 9cf403e..04d84c2 100644
--- a/extras/mcufriend_how_to.txt
+++ b/extras/mcufriend_how_to.txt
@@ -136,10 +136,10 @@ It also runs on NUCLEO-F103 and TEENSY3.2 with Sparkfun Adapter
 	
 21. BLUEPILL Adapter standard wiring is:
     //LCD pins  |D7 |D6 |D5 |D4 |D3 |D2 |D1 |D0 | |RD |WR |RS |CS |RST| |SD_SS|SD_DI|SD_DO|SD_SCK|
-    //STM32 pin |PA7|PA6|PA5|PA4|PA3|PA2|PA1|PA0| |PB0|PB6|PB7|PB8|PB9| |PB12 |PB15 |PB14 |PB13  | **SPI2**
+    //STM32 pin |PA7|PA6|PA5|PA4|PA3|PA2|PA1|PA0| |PB0|PB6|PB7|PB8|PB9| |PA15 |PB5  |PB4  |PB3   | **ALT-SPI1**
     
     Maple core:  to use SPI2 for SPI. edit SPI.cpp for SPIClass SPI(2);
-    STM Core:    to use SPI2 for SPI. edit variant.h to use PB12-PB15 for SPI_SS etc
+    STM Core:    to use SPI2 for SPI. edit variant.h to use PA15, PB3, PB4, PB5 for SPI_SS etc
     
     Touchscreen needs XM, YP to be on Analog capable pins.  Measure resistance with DMM to determine X, Y
     300R pair is XP, XM.  500R pair is YP, YM.  choose XM, YP from PA7, PA6.  XP, YM from PB6, PB7
diff --git a/utility/mcufriend_shield.h b/utility/mcufriend_shield.h
index 8de0557..3e76e53 100644
--- a/utility/mcufriend_shield.h
+++ b/utility/mcufriend_shield.h
@@ -545,7 +545,7 @@ void write_8(uint8_t x)
 #warning Uno Shield on BLUEPILL
 
 //LCD pins  |D7 |D6 |D5 |D4 |D3 |D2 |D1 |D0 | |RD |WR |RS |CS |RST| |SD_SS|SD_DI|SD_DO|SD_SCK|
-//STM32 pin |PA7|PA6|PA5|PA4|PA3|PA2|PA1|PA0| |PB0|PB6|PB7|PB8|PB9| |PB12 |PB15 |PB14 |PB13  | **SPI2**
+//STM32 pin |PA7|PA6|PA5|PA4|PA3|PA2|PA1|PA0| |PB0|PB6|PB7|PB8|PB9| |PA15 |PB5  |PB4  |PB3   | **ALT-SPI1**
 
 #define RD_PORT GPIOB
 //#define RD_PIN  5