diff --git a/Makefile b/Makefile
index d3b1941..55afc4e 100644
--- a/Makefile
+++ b/Makefile
@@ -16,12 +16,18 @@ all: build
 build:
 	$(GO) install -tags '$(GO_BUILD_TAGS)' ./...
 
+build_use_lmdb:
+	$(GO) install -tags '$(GO_BUILD_TAGS) lmdb' ./...	
+
 clean:
 	$(GO) clean -i ./...
 
 test:
 	$(GO) test --race -tags '$(GO_BUILD_TAGS)' ./...
 
+test_use_lmdb:
+	$(GO) test --race -tags '$(GO_BUILD_TAGS) lmdb' ./...	
+
 test_ledis:
 	$(GO) test --race -tags '$(GO_BUILD_TAGS)' ./ledis
 
diff --git a/store/mdb/mdb.go b/store/mdb/mdb.go
index 6bf26f6..db27b33 100644
--- a/store/mdb/mdb.go
+++ b/store/mdb/mdb.go
@@ -1,4 +1,4 @@
-// +build !windows
+// +build lmdb
 
 package mdb
 
diff --git a/store/mdb/snapshot.go b/store/mdb/snapshot.go
index 270907d..0882cd6 100644
--- a/store/mdb/snapshot.go
+++ b/store/mdb/snapshot.go
@@ -1,4 +1,4 @@
-// +build !windows
+// +build lmdb
 
 package mdb
 
diff --git a/store/mdb/tx.go b/store/mdb/tx.go
index e2e3be0..a4fc01b 100644
--- a/store/mdb/tx.go
+++ b/store/mdb/tx.go
@@ -1,4 +1,4 @@
-// +build !windows
+// +build lmdb
 
 package mdb