diff --git a/Makefile b/Makefile
index 98f6fbb..a6989df 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 GO ?= go
 RM ?= rm
 SCDOC ?= scdoc
-GOFLAGS ?= -v -ldflags "-w -X `go list`.Version=$(VERSION) -X `go list`.Commit=$(COMMIT) -X `go list`.Build=$(BUILD)"
+GOFLAGS ?= -v -ldflags "-w -X `go list`.Version=$(VERSION) -X `go list`.Commit=$(COMMIT) -X `go list`.Build=$(BUILD)" -tags "static_build"
 PREFIX ?= /usr/local
 BINDIR ?= bin
 MANDIR ?= share/man
@@ -13,6 +13,9 @@ COMMIT = `git rev-parse --short HEAD || echo "$COMMIT"`
 BRANCH = `git rev-parse --abbrev-ref HEAD`
 BUILD = `git show -s --pretty=format:%cI`
 
+GOARCH ?= amd64
+GOOS ?= linux
+
 all: suika suikactl suika-znc-import doc/suika.1
 
 suika: