diff --git a/README.md b/README.md
index 338c20507da41775691f5e1e3b5b894bdb0ea3bb..f26c8bbcf32b7d1eb0eb9d76c3536afceed22f32 100644
--- a/README.md
+++ b/README.md
@@ -169,7 +169,7 @@ Download and build
 
 **Set the WOLF_ROOT environment variable**
 
-We need a platform-independent way to specify where is the WOLF project, so that code can locate relevant files at tun-time. 
+We need a platform-independent way to specify where is the WOLF project, so that code can locate relevant files at run-time. 
 For example, if we want to use YAML files for configuring sensors, `YAML::LoadFile(filename)` needs an absolute path to a `filename`. This name is platform-specific, and many times user-specific.
 
 Usually, these files are out of the WOLF project. But for testing purposes, some of these files exist within the WOLF directories.