diff --git a/Makefile b/Makefile
index 4714705..78d9863 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ INTERNAL_BIN_DIR=_internal_bin
 GOVERSION=$(shell go version)
 GOOS=$(word 1,$(subst /, ,$(lastword $(GOVERSION))))
 GOARCH=$(word 2,$(subst /, ,$(lastword $(GOVERSION))))
-VERSION=$(patsubst "%",%,$(lastword $(shell grep version peco.go)))
+VERSION=$(patsubst "%",%,$(lastword $(shell grep 'const version' peco.go)))
 RELEASE_DIR=releases
 ARTIFACTS_DIR=$(RELEASE_DIR)/artifacts/$(VERSION)
 SRC_FILES = $(wildcard *.go cmd/peco/*.go internal/*/*.go)