diff --git a/Installation.md b/Installation.md
index 3585a36..df135a0 100644
--- a/Installation.md
+++ b/Installation.md
@@ -165,7 +165,7 @@ setup.
 domain. Furthermore, the `verificationKey` should be set to a long (possibly
 random) secret string. This string is used to sign and verify security tokens.
 Btw. if you need to invalidate all ReCodEx security tokens at once, just modify
-this string (that will effectively sing everybody off, so everyone will need to
+this string (that will effectively sign everybody off, so everyone will need to
 go through login process again).
 
 3. Configure `fileStorage` paths. The storages are basically directories managed