diff --git a/ports/nrf/Makefile b/ports/nrf/Makefile
index 2885fe251c..6ca83f1e6e 100644
--- a/ports/nrf/Makefile
+++ b/ports/nrf/Makefile
@@ -318,8 +318,8 @@ SRC_QSTR_AUTO_DEPS +=
 $(OBJ): | $(HEADER_BUILD)/pins.h
 
 # Use a pattern rule here so that make will only call make-pins.py once to make
-# both pins_$(BOARD).c and pins.h
-$(BUILD)/%_$(BOARD).c $(HEADER_BUILD)/%.h $(HEADER_BUILD)/%_af_const.h $(BUILD)/%_qstr.h: boards/$(BOARD)/%.csv $(MAKE_PINS) $(AF_FILE) $(PREFIX_FILE) | $(HEADER_BUILD)
+# both pins_gen.c and pins.h
+$(BUILD)/%_gen.c $(HEADER_BUILD)/%.h $(HEADER_BUILD)/%_af_const.h $(BUILD)/%_qstr.h: boards/$(BOARD)/%.csv $(MAKE_PINS) $(AF_FILE) $(PREFIX_FILE) | $(HEADER_BUILD)
 	$(ECHO) "Create $@"
 	$(Q)$(PYTHON) $(MAKE_PINS) --board $(BOARD_PINS) --af $(AF_FILE) --prefix $(PREFIX_FILE) --hdr $(GEN_PINS_HDR) --qstr $(GEN_PINS_QSTR) --af-const $(GEN_PINS_AF_CONST) --af-py $(GEN_PINS_AF_PY) > $(GEN_PINS_SRC)