diff --git a/unix/x0vncserver/TimeMillis.h b/unix/x0vncserver/TimeMillis.h
index e79db12..115ce08 100644
--- a/unix/x0vncserver/TimeMillis.h
+++ b/unix/x0vncserver/TimeMillis.h
@@ -31,7 +31,7 @@
 
   TimeMillis();
 
-  // Set this object to current time, returns true on sucess.
+  // Set this object to current time, returns true on success.
   bool update();
 
   // Return difference in milliseconds between two time points.