Remove duplicated line
diff --git a/Makefile b/Makefile
index d0dd506..ae20dfa 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,6 @@
 build-all:
 	gox -verbose \
 	-ldflags "-X main.version=${VERSION}" \
-	-ldflags "-X main.version=${VERSION}" \
 	-os="linux darwin windows " \
 	-arch="amd64 386 armv5 armv6 armv7 arm64" \
 	-osarch="!darwin/arm64" \