diff --git a/configs/EAGLEF405/config.h b/configs/EAGLEF405/config.h
index a30a2b6c..d9c2af8b 100644
--- a/configs/EAGLEF405/config.h
+++ b/configs/EAGLEF405/config.h
@@ -67,7 +67,7 @@
 #define SPI3_SCK_PIN PC10
 #define SPI1_SDI_PIN PA6
 #define SPI2_SDI_PIN PB14
-#define SPI3_SDI_PIN B4
+#define SPI3_SDI_PIN PB4
 #define SPI1_SDO_PIN PA7
 #define SPI2_SDO_PIN PB15
 #define SPI3_SDO_PIN PB5