diff --git a/wiki/pages/protocol.html b/wiki/pages/protocol.html
index f7894eb47e41eb9a3936c79d0d393a34174b2d0b..279299cfcbd0d893618eb057a149562bfe2de3d9 100644
--- a/wiki/pages/protocol.html
+++ b/wiki/pages/protocol.html
@@ -100,7 +100,7 @@
                 <span>
                   <small>
                     <a href="#anchor2.2" class="scroll-link d-block w-100"
-                      >Protein espression validation</a
+                      >Protein expression validation</a
                     >
                   </small></span
                 >