diff --git a/context.go b/context.go
index 300b1e72..ffd02b8e 100644
--- a/context.go
+++ b/context.go
@@ -8,13 +8,14 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
-	"github.com/gin-gonic/gin/binding"
-	"github.com/gin-gonic/gin/render"
-	"github.com/julienschmidt/httprouter"
 	"log"
 	"net"
 	"net/http"
 	"strings"
+
+	"github.com/gin-gonic/gin/binding"
+	"github.com/gin-gonic/gin/render"
+	"github.com/julienschmidt/httprouter"
 )
 
 const (
@@ -187,14 +188,14 @@ func (c *Context) Get(key string) (interface{}, error) {
 			return value, nil
 		}
 	}
-	return nil, errors.New("Key does not exist.")
+	return nil, errors.New("Key %s does not exist")
 }
 
 // MustGet returns the value for the given key or panics if the value doesn't exist.
 func (c *Context) MustGet(key string) interface{} {
 	value, err := c.Get(key)
-	if err != nil || value == nil {
-		log.Panicf("Key %s doesn't exist", value)
+	if err != nil {
+		log.Panicf(err.Error())
 	}
 	return value
 }
diff --git a/context_test.go b/context_test.go
index 745e1cdc..b531e6d3 100644
--- a/context_test.go
+++ b/context_test.go
@@ -214,11 +214,11 @@ func TestHandlerFunc(t *testing.T) {
 	r.ServeHTTP(w, req)
 
 	if w.Code != 404 {
-		t.Errorf("Response code should be Not found, was: %s", w.Code)
+		t.Errorf("Response code should be Not found, was: %d", w.Code)
 	}
 
 	if stepsPassed != 2 {
-		t.Errorf("Falied to switch context in handler function: %s", stepsPassed)
+		t.Errorf("Falied to switch context in handler function: %d", stepsPassed)
 	}
 }
 
@@ -329,7 +329,7 @@ func TestBindingJSON(t *testing.T) {
 	r.ServeHTTP(w, req)
 
 	if w.Code != 200 {
-		t.Errorf("Response code should be Ok, was: %s", w.Code)
+		t.Errorf("Response code should be Ok, was: %d", w.Code)
 	}
 
 	if w.Body.String() != "{\"parsed\":\"bar\"}\n" {
@@ -362,7 +362,7 @@ func TestBindingJSONEncoding(t *testing.T) {
 	r.ServeHTTP(w, req)
 
 	if w.Code != 200 {
-		t.Errorf("Response code should be Ok, was: %s", w.Code)
+		t.Errorf("Response code should be Ok, was: %d", w.Code)
 	}
 
 	if w.Body.String() != "{\"parsed\":\"嘉\"}\n" {
@@ -395,7 +395,7 @@ func TestBindingJSONNoContentType(t *testing.T) {
 	r.ServeHTTP(w, req)
 
 	if w.Code != 400 {
-		t.Errorf("Response code should be Bad request, was: %s", w.Code)
+		t.Errorf("Response code should be Bad request, was: %d", w.Code)
 	}
 
 	if w.Body.String() == "{\"parsed\":\"bar\"}\n" {
@@ -430,7 +430,7 @@ func TestBindingJSONMalformed(t *testing.T) {
 	r.ServeHTTP(w, req)
 
 	if w.Code != 400 {
-		t.Errorf("Response code should be Bad request, was: %s", w.Code)
+		t.Errorf("Response code should be Bad request, was: %d", w.Code)
 	}
 	if w.Body.String() == "{\"parsed\":\"bar\"}\n" {
 		t.Errorf("Response should not be {\"parsed\":\"bar\"}, was: %s", w.Body.String())