diff --git a/src/agent/Makefile b/src/agent/Makefile
index 6a5e7aef2c..18167a91a3 100644
--- a/src/agent/Makefile
+++ b/src/agent/Makefile
@@ -25,11 +25,6 @@ export VERSION_COMMIT := $(if $(COMMIT),$(VERSION)-$(COMMIT),$(VERSION))
 
 BUILD_TYPE = release
 
-# set proto file to generate
-ifdef proto
-  PROTO_FILE=${proto}
-endif
-
 ARCH = $(shell uname -m)
 LIBC ?= musl
 ifneq ($(LIBC),musl)
@@ -169,4 +164,4 @@ help: show-summary
 	optimize
 
 generate-protocols:
-	protocols/hack/update-generated-proto.sh "${PROTO_FILE}"
+	protocols/hack/update-generated-proto.sh all