diff --git a/go.mod b/go.mod
index fed236b3..300af363 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,6 @@ go 1.12
 
 require (
 	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect
-	github.com/c-bata/go-prompt v0.2.3
 	github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e
 	github.com/fatih/color v1.7.0
 	github.com/golang/protobuf v1.3.1
diff --git a/go.sum b/go.sum
index 1cdf3cf2..207d77bc 100644
--- a/go.sum
+++ b/go.sum
@@ -10,8 +10,6 @@ github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310 h1:BUAU3CGlLvorLI26
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
-github.com/c-bata/go-prompt v0.2.3 h1:jjCS+QhG/sULBhAaBdjb2PlMRVaKXQgn+4yzaauvs2s=
-github.com/c-bata/go-prompt v0.2.3/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
 github.com/chzyer/logex v1.1.10 h1:Swpa1K6QvQznwJRcfTfQJmTE72DqScAa40E+fbHEXEE=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e h1:fY5BOSpyZCqRo5OhCuC+XN+r/bBCmeuuJtjz+bCNIf8=
diff --git a/grpc/grpc.go b/grpc/grpc.go
index 95254962..c4f982fd 100644
--- a/grpc/grpc.go
+++ b/grpc/grpc.go
@@ -116,7 +116,7 @@ func NewClient(addr, serverName string, useReflection, useTLS bool, cacert, cert
 			}
 			cp := x509.NewCertPool()
 			if !cp.AppendCertsFromPEM(b) {
-				return nil, errors.Wrap(err, "failed to append the client certificate")
+				return nil, errors.New("failed to append the client certificate")
 			}
 			tlsCfg.RootCAs = cp
 		}