diff --git a/src/modm/board/nucleo_f103rb/board.hpp b/src/modm/board/nucleo_f103rb/board.hpp
index cd001eb8bc..787be72758 100644
--- a/src/modm/board/nucleo_f103rb/board.hpp
+++ b/src/modm/board/nucleo_f103rb/board.hpp
@@ -120,6 +120,9 @@ initialize()
 	stlink::Uart::initialize<SystemClock, 115200_Bd>();
 
 	Button::setInput();
+
+	// Enable PB4 as GPIO
+	AFIO->MAPR |= AFIO_MAPR_SWJ_CFG_JTAGDISABLE;
 }
 /// @}