diff --git a/Makefile b/Makefile
index 03e87b0..e87c440 100644
--- a/Makefile
+++ b/Makefile
@@ -220,3 +220,8 @@ ULIBS = -lm
 
 RULESPATH = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC
 include $(RULESPATH)/rules.mk
+
+TAGS: Makefile
+	@etags *.[ch] NANOVNA_STM32_F072/*.[ch] $(shell find ChibiOS/os/hal/ports/STM32/STM32F0xx ChibiOS/os -name \*.\[ch\] -print) 
+	@ls -l TAGS
+