diff --git a/boards/common/nucleo/Makefile.include b/boards/common/nucleo/Makefile.include
index 34cc7539a8..21397cfefe 100644
--- a/boards/common/nucleo/Makefile.include
+++ b/boards/common/nucleo/Makefile.include
@@ -12,6 +12,10 @@ PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.usbmodem*)))
 # setup serial terminal
 include $(RIOTMAKE)/tools/serial.inc.mk
 
+# nucleo boards can become un-flashable after a hardfault,
+# use connect_assert_srst to always be able to flash or reset the boards.
+export OPENOCD_RESET_USE_CONNECT_ASSERT_SRST ?= 1
+
 # all Nucleo boards have an on-board ST-link adapter
 DEBUG_ADAPTER ?= stlink