diff --git a/config.md b/config.md
index dfb175f5..758efaa8 100644
--- a/config.md
+++ b/config.md
@@ -365,7 +365,7 @@ Implementations that are reading/processing this configuration file MUST NOT gen
 ```
 
 ## Extensibility
-Implementations that are reading/processing this configuration file MUST NOT generate an error if they encounter an unkown property.
+Implementations that are reading/processing this configuration file MUST NOT generate an error if they encounter an unknown property.
 Instead they MUST ignore unknown properties.
 
 ## Configuration Schema Example