diff --git a/core/embed/models/T3B1/boards/trezor_t3b1_revB.h b/core/embed/models/T3B1/boards/trezor_t3b1_revB.h
index ab93d0957..9e58e24ba 100644
--- a/core/embed/models/T3B1/boards/trezor_t3b1_revB.h
+++ b/core/embed/models/T3B1/boards/trezor_t3b1_revB.h
@@ -4,7 +4,7 @@
 #define DISPLAY_RESX 128
 #define DISPLAY_RESY 64
 
-#define VDD_1V8 1
+#define VDD_3V3 1
 
 #define USE_I2C 1
 #define USE_BUTTON 1