diff --git a/cmd/config-host-add.go b/cmd/config-host-add.go
index 98f4290a..9bed03f4 100644
--- a/cmd/config-host-add.go
+++ b/cmd/config-host-add.go
@@ -72,12 +72,11 @@ func checkConfigHostAddSyntax(ctx *cli.Context) {
 	api := args.Get(4)
 
 	if !isValidAlias(alias) {
-		fatalIf(errDummy().Trace(alias), "Invalid alias `"+alias+"`.")
+		fatalIf(errInvalidAlias(alias), "Invalid alias")
 	}
 
 	if !isValidHostURL(url) {
-		fatalIf(errDummy().Trace(url),
-			"Invalid URL `"+url+"`.")
+		fatalIf(errInvalidURL(url), "Invalid URL.")
 	}
 
 	if !isValidAccessKey(accessKey) {
diff --git a/cmd/config-validate.go b/cmd/config-validate.go
index c9476484..adab5924 100644
--- a/cmd/config-validate.go
+++ b/cmd/config-validate.go
@@ -17,7 +17,6 @@
 package cmd
 
 import (
-	"bytes"
 	"fmt"
 	"strings"
 )
@@ -54,25 +53,13 @@ func validateConfigFile(config *configV8) (bool, []string) {
 func validateConfigHost(host hostConfigV8) (bool, []string) {
 	var validationSuccessful = true
 	var hostErrors []string
-	api := host.API
-	validAPI := isValidAPI(strings.ToLower(api))
-	if !validAPI {
-		var errorMsg bytes.Buffer
-		errorMsg.WriteString(fmt.Sprintf(
-			"%s API for host %s is not Valid. It is not part of any of the following APIs:\n",
-			api, host.URL))
-		for index, validAPI := range validAPIs {
-			errorMsg.WriteString(fmt.Sprintf("%d. %s\n", index+1, validAPI))
-		}
+	if !isValidAPI(strings.ToLower(host.API)) {
 		validationSuccessful = false
-		hostErrors = append(hostErrors, errorMsg.String())
+		hostErrors = append(hostErrors, errInvalidAPISignature(host.API, host.URL).ToGoError().Error())
 	}
-	url := host.URL
-	validURL := isValidHostURL(url)
-	if !validURL {
+	if !isValidHostURL(host.URL) {
 		validationSuccessful = false
-		msg := fmt.Sprintf("URL %s for host %s is not valid. Could not parse it.\n", url, host.URL)
-		hostErrors = append(hostErrors, msg)
+		hostErrors = append(hostErrors, errInvalidURL(host.URL).ToGoError().Error())
 	}
 	return validationSuccessful, hostErrors
 }
diff --git a/cmd/main.go b/cmd/main.go
index dc4af656..10b96c23 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -134,7 +134,7 @@ func checkConfig() {
 			}
 			errorMsg.WriteString(errMsg + "\n")
 		}
-		console.Fatalln(errorMsg.String())
+		console.Fatal(errorMsg.String())
 	}
 }
 
diff --git a/cmd/typed-errors.go b/cmd/typed-errors.go
index 37d08549..2a0fdad2 100644
--- a/cmd/typed-errors.go
+++ b/cmd/typed-errors.go
@@ -18,6 +18,8 @@ package cmd
 
 import (
 	"errors"
+	"fmt"
+	"strings"
 
 	"github.com/minio/minio/pkg/probe"
 )
@@ -39,6 +41,21 @@ var (
 		return probe.NewError(errors.New("Use `mc config host add mycloud " + URL + " ...` to add an alias. Use the alias for S3 operations.")).Untrace()
 	}
 
+	errInvalidAlias = func(alias string) *probe.Error {
+		return probe.NewError(errors.New("Alias `" + alias + "` should have alphanumeric characters such as [helloWorld0, hello_World0, ...]"))
+	}
+
+	errInvalidURL = func(URL string) *probe.Error {
+		return probe.NewError(errors.New("URL `" + URL + "` for minio client should be of the form scheme://host[:port]/ without resource component."))
+	}
+
+	errInvalidAPISignature = func(api, url string) *probe.Error {
+		msg := fmt.Sprintf(
+			"Unrecognized API signature %s for host %s. Valid options are `[%s]`",
+			api, url, strings.Join(validAPIs, ", "))
+		return probe.NewError(errors.New(msg))
+	}
+
 	errNoMatchingHost = func(URL string) *probe.Error {
 		return probe.NewError(errors.New("No matching host found for the given URL `" + URL + "`.")).Untrace()
 	}