diff --git a/Makefile b/Makefile
index 7941326..e1c53c5 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,12 @@ PREFIX ?= /usr
 DESTDIR ?=
 BINDIR ?= $(PREFIX)/bin
 
+ifeq ($(shell go env GOOS),linux)
+ifeq ($(wildcard .git),)
+$(error Do not build this for Linux. Instead use the Linux kernel module. See wireguard.com/install/ for more info.)
+endif
+endif
+
 all: wireguard-go
 
 wireguard-go: $(wildcard *.go) $(wildcard */*.go)