diff --git a/lib/internal/errors.js b/lib/internal/errors.js
index aadb0684d0d778..aca7c66e6d3bd2 100644
--- a/lib/internal/errors.js
+++ b/lib/internal/errors.js
@@ -341,7 +341,7 @@ E('ERR_TLS_HANDSHAKE_TIMEOUT', 'TLS handshake timeout');
 E('ERR_TLS_RENEGOTIATION_FAILED', 'Failed to renegotiate');
 E('ERR_TLS_REQUIRED_SERVER_NAME',
   '"servername" is required parameter for Server.addContext');
-E('ERR_TLS_SESSION_ATTACK', 'TSL session renegotiation attack detected');
+E('ERR_TLS_SESSION_ATTACK', 'TLS session renegotiation attack detected');
 E('ERR_TRANSFORM_ALREADY_TRANSFORMING',
   'Calling transform done when still transforming');
 E('ERR_TRANSFORM_WITH_LENGTH_0',