diff --git a/.travis.yml b/.travis.yml
index 4cbff6e..b0e346b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ install:
   - go get -u honnef.co/go/tools/cmd/staticcheck
   - go get -u honnef.co/go/tools/cmd/unused
   - go get -u github.com/mdempsky/unconvert
+  - go get -u github.com/gordonklaus/ineffassign
 script:
   - find . ! \( -path './vendor' -prune \) -type f -name '*.go' -print0 | xargs -0 gofmt -l -s
   - go vet  $(go list ./... | grep -v /vendor/)
@@ -18,3 +19,4 @@ script:
   - staticcheck $(go list ./... | grep -v /vendor/)
   - unused $(go list ./... | grep -v /vendor/)
   - unconvert $(go list ./... | grep -v /vendor/)
+  - ineffassign .
diff --git a/cmd/commands/pack/pack.go b/cmd/commands/pack/pack.go
index ee7eced..becddcc 100644
--- a/cmd/commands/pack/pack.go
+++ b/cmd/commands/pack/pack.go
@@ -417,7 +417,7 @@ func packDirectory(output io.Writer, excludePrefix []string, excludeSuffix []str
 func packApp(cmd *commands.Command, args []string) int {
 	output := cmd.Out()
 	curPath, _ := os.Getwd()
-	thePath := ""
+	var thePath string
 
 	nArgs := []string{}
 	has := false
diff --git a/generate/g_appcode.go b/generate/g_appcode.go
index fd6a3ed..f575568 100644
--- a/generate/g_appcode.go
+++ b/generate/g_appcode.go
@@ -503,9 +503,7 @@ func (mysqlDB *MysqlDB) GetColumns(db *sql.DB, table *Table, blackList map[strin
 
 // GetGoDataType maps an SQL data type to Golang data type
 func (*MysqlDB) GetGoDataType(sqlType string) (string, error) {
-	var typeMapping = map[string]string{}
-	typeMapping = typeMappingMysql
-	if v, ok := typeMapping[sqlType]; ok {
+	if v, ok := typeMappingMysql[sqlType]; ok {
 		return v, nil
 	}
 	return "", fmt.Errorf("data type '%s' not found", sqlType)
@@ -766,7 +764,7 @@ func writeModelFiles(tables []*Table, mPath string, selectedTables map[string]bo
 				continue
 			}
 		}
-		template := ""
+		var template string
 		if tb.Pk == "" {
 			template = StructModelTPL
 		} else {
diff --git a/generate/g_hproseappcode.go b/generate/g_hproseappcode.go
index f73d6ff..f6d352d 100644
--- a/generate/g_hproseappcode.go
+++ b/generate/g_hproseappcode.go
@@ -369,7 +369,7 @@ func writeHproseModelFiles(tables []*Table, mPath string, selectedTables map[str
 				continue
 			}
 		}
-		template := ""
+		var template string
 		if tb.Pk == "" {
 			template = HproseStructModelTPL
 		} else {
diff --git a/generate/swaggergen/g_docs.go b/generate/swaggergen/g_docs.go
index a9f1c0a..36dcec4 100644
--- a/generate/swaggergen/g_docs.go
+++ b/generate/swaggergen/g_docs.go
@@ -216,7 +216,7 @@ func GenerateDocs(curpath string) {
 							for _, p := range params {
 								switch pp := p.(type) {
 								case *ast.CallExpr:
-									controllerName := ""
+									var controllerName string
 									if selname := pp.Fun.(*ast.SelectorExpr).Sel.String(); selname == "NSNamespace" {
 										s, params := analyseNewNamespace(pp)
 										for _, sp := range params {
@@ -298,12 +298,10 @@ func analyseNSInclude(baseurl string, ce *ast.CallExpr) string {
 		}
 		if apis, ok := controllerList[cname]; ok {
 			for rt, item := range apis {
-				tag := ""
+				tag := cname
 				if baseurl != "" {
 					rt = baseurl + rt
 					tag = strings.Trim(baseurl, "/")
-				} else {
-					tag = cname
 				}
 				if item.Get != nil {
 					item.Get.Tags = []string{tag}
@@ -749,7 +747,6 @@ func parseObject(d *ast.Object, k string, m *swagger.Schema, realTypes *[]string
 	if st.Fields.List != nil {
 		m.Properties = make(map[string]swagger.Propertie)
 		for _, field := range st.Fields.List {
-			realType := ""
 			isSlice, realType, sType := typeAnalyser(field)
 			if (isSlice && isBasicType(realType)) || sType == "object" {
 				if len(strings.Split(realType, " ")) > 1 {
diff --git a/logger/colors/colorwriter_windows.go b/logger/colors/colorwriter_windows.go
index d4c567a..67acb93 100644
--- a/logger/colors/colorwriter_windows.go
+++ b/logger/colors/colorwriter_windows.go
@@ -360,7 +360,7 @@ func isParameterChar(b byte) bool {
 }
 
 func (cw *colorWriter) Write(p []byte) (int, error) {
-	r, nw, first, last := 0, 0, 0, 0
+	var r, nw, first, last int
 	if cw.mode != DiscardNonColorEscSeq {
 		cw.state = outsideCsiCode
 		cw.resetBuffer()