diff --git a/README.md b/README.md
index 3ba4330..647fd6f 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ Put this at the bottom of `.tmux.conf`:
 
 Reload TMUX environment so TPM is sourced:
 
-    # type this in terminal
+    # type this in terminal if tmux is already running
     $ tmux source ~/.tmux.conf
 
 That's it!