diff --git a/src/main.go b/src/main.go
index 727f649..9de1a2f 100644
--- a/src/main.go
+++ b/src/main.go
@@ -14,6 +14,7 @@ var api API
 
 //var httptestdir string
 var tstypemapper map[string]string = make(map[string]string)
+var exceptionaltypemapper map[string]string = make(map[string]string)
 var knownMethods map[string]bool = make(map[string]bool)
 var httpMapper map[string]map[string]string = make(map[string]map[string]string)
 var packageName string = "main"
@@ -257,6 +258,8 @@ func main() {
 
 	loadConfig()
 
+	exceptionaltypemapper["[]byte"] = "string"
+
 	tstypemapper["time.Time"] = "Date"
 	tstypemapper["primitive.ObjectID"] = "string"
 	tstypemapper["time.Duration"] = "Date"
diff --git a/src/processGoClientOutput.go b/src/processGoClientOutput.go
index 3a19f23..80e2952 100644
--- a/src/processGoClientOutput.go
+++ b/src/processGoClientOutput.go
@@ -3,7 +3,6 @@ package main
 import (
 	"bytes"
 	"fmt"
-	dc "go.digitalcircle.com.br/golib/base"
 	"io/ioutil"
 	"strings"
 )
@@ -110,5 +109,7 @@ func invoke(m string, path string, bodyo interface{}) (*json.Decoder, error) {
 	}
 
 	err := ioutil.WriteFile(f, b.Bytes(), 0600)
-	dc.Err(err)
+	if err != nil {
+		panic(err)
+	}
 }
diff --git a/src/processGoServerOutput.go b/src/processGoServerOutput.go
index 01a2cb9..2ad368c 100644
--- a/src/processGoServerOutput.go
+++ b/src/processGoServerOutput.go
@@ -115,7 +115,9 @@ ret.Perms["%s_%s"]="%s"
 	}
 
 	err := ioutil.WriteFile(f, b.Bytes(), 0600)
-	dc.Err(err)
+	if err != nil {
+		panic(err)
+	}
 	cmd := exec.Command("/bin/sh", "-c", "go fmt "+f)
 	bs, err := cmd.Output()
 	//dc.Err(err)
diff --git a/src/processTSClientOutput.go b/src/processTSClientOutput.go
index 7d81c9f..9f289df 100644
--- a/src/processTSClientOutput.go
+++ b/src/processTSClientOutput.go
@@ -3,8 +3,8 @@ package main
 import (
 	"bytes"
 	"fmt"
-	dc "go.digitalcircle.com.br/golib/base"
 	"io/ioutil"
+	"log"
 	"strings"
 )
 
@@ -111,15 +111,26 @@ async function InvokeOk(path: string, method: HTMLMethod, body?: any): Promise<b
 		}
 
 		b.WriteString(fmt.Sprintf("export interface %s {\n", k))
-
+		var ftype string
+		var ok bool
 		for kf, f := range v.Fields {
-			ftype, ok := tstypemapper[f.Type]
+			ftype, ok = exceptionaltypemapper[f.String()]
+			if ok {
+				log.Printf("Mapped exceptional type: %s ==> %s", f.String(), ftype)
+			}
+
+			if !ok {
+				if f.Array {
+					ftype, ok = tstypemapper["[]"+f.Type]
+				} else {
+					ftype, ok = tstypemapper[f.Type]
+				}
+			}
+
 			if !ok {
 				ftype = f.Type
 			}
-			if f.Array {
-				ftype = ftype + "[]"
-			} else if f.Map {
+			if f.Map {
 				fm, ok := tstypemapper[f.Mapkey]
 				if !ok {
 					fm = f.Mapkey
@@ -155,5 +166,7 @@ async function InvokeOk(path: string, method: HTMLMethod, body?: any): Promise<b
 	b.WriteString("//#endregion\n")
 
 	err := ioutil.WriteFile(f, b.Bytes(), 0600)
-	dc.Err(err)
+	if err != nil {
+		panic(err)
+	}
 }
diff --git a/src/types.go b/src/types.go
index 324b08d..528ada3 100644
--- a/src/types.go
+++ b/src/types.go
@@ -15,6 +15,15 @@ type APIField struct {
 	Mapkey string `yaml:"mapkey"`
 	Mapval string `yaml:"mapval"`
 }
+
+func (a *APIField) String() string {
+	if a.Array {
+		return "[]" + a.Type
+	} else {
+		return a.Type
+	}
+}
+
 type APIType struct {
 	Name   string
 	Desc   string               `yaml:"desc"`