diff --git a/Makefile.platform.sample b/Makefile.platform.sample
index 2e1221cb7..5ff0c4748 100644
--- a/Makefile.platform.sample
+++ b/Makefile.platform.sample
@@ -27,6 +27,10 @@ PLATFORM=PM3RDV4
 # Only available with PLATFORM=PM3GENERIC
 #LED_ORDER=PM3EASY
 
+# Uncomment a line below to change default USART baud rate
+# defaults to 115200 used by HC-05 in Blueshark
+#USART_BAUD_RATE=19200
+
 # Uncomment the lines below in order to make a 256KB image
 # and comment out the lines above
 
diff --git a/common_arm/Makefile.hal b/common_arm/Makefile.hal
index f9bb9065e..e317ea247 100644
--- a/common_arm/Makefile.hal
+++ b/common_arm/Makefile.hal
@@ -252,6 +252,10 @@ endif
 # WITH_FPC_USART_* needs WITH_FPC_USART :
 ifneq (,$(findstring WITH_FPC_USART_,$(PLATFORM_DEFS)))
     PLATFORM_DEFS += -DWITH_FPC_USART
+    ifeq ($(USART_BAUD_RATE),)
+        USART_BAUD_RATE=115200
+    endif
+    PLATFORM_DEFS += -DUSART_BAUD_RATE=$(USART_BAUD_RATE)
 endif
 
 PLATFORM_DEFS_INFO = $(strip $(filter-out STANDALONE%, $(subst -DWITH_,,$(PLATFORM_DEFS))))
diff --git a/include/usart_defs.h b/include/usart_defs.h
index 501f66464..84d6ff17c 100644
--- a/include/usart_defs.h
+++ b/include/usart_defs.h
@@ -16,8 +16,9 @@
 #ifndef __USART_DEFS_H
 #define __USART_DEFS_H
 
-//#define USART_BAUD_RATE 9600
+#ifndef USART_BAUD_RATE
 #define USART_BAUD_RATE 115200
+#endif
 // BT HC-06 physical layer runs at 128kbps
 // so it's possible to gain a little bit by using 230400
 // with some risk to overflow its internal buffers: