diff --git a/libbeat/common/transport/tlscommon/types.go b/libbeat/common/transport/tlscommon/types.go
index 7c2be0e9a0e..eae535b6e7c 100644
--- a/libbeat/common/transport/tlscommon/types.go
+++ b/libbeat/common/transport/tlscommon/types.go
@@ -190,12 +190,12 @@ func (m *tlsClientAuth) Unpack(in interface{}) error {
 
 	s, ok := in.(string)
 	if !ok {
-		return fmt.Errorf("client authentification must be an identifier")
+		return fmt.Errorf("client authentication must be an identifier")
 	}
 
 	mode, found := tlsClientAuthTypes[s]
 	if !found {
-		return fmt.Errorf("unknown client authentification mode'%v'", s)
+		return fmt.Errorf("unknown client authentication mode'%v'", s)
 	}
 
 	*m = mode