1 files changed, 8 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index e85ccd7f4..59ecb7b51 100644
--- a/Makefile
+++ b/Makefile
@@ -89,7 +89,14 @@ vyshim:
 	$(MAKE) -C $(SHIM_DIR)
 
 .PHONY: all
-all: clean libvyosconfig interface_definitions op_mode_definitions test j2lint vyshim generate-configd-include-json
+all: clean copyright libvyosconfig interface_definitions op_mode_definitions test j2lint vyshim generate-configd-include-json
+
+.PHONY: copyright
+copyright:
+	@if git grep -q -E "Copyright (19|20)[0-9]{2}(-[0-9]{4})? VyOS maintainers"; then \
+		echo "Error: Legacy copyright notice found."; \
+		exit 1; \
+	fi
 
 .PHONY: clean
 clean: